2017年7月31日星期一

Coating process in electronic assembly production

4 tips to electronic companies to outsource Electronic Assembly Services written by: albert123 It is always a wiser decision for any small and medium electronic companies to outsource electronic assembly services. It can help you to save a lot of money by working with the third-party professionals rather than hiring a full team to do this work. Even, you will not have to buy or maintain the expensive equipment and tools that are needed for this service. So, you have to find the best service which is not only reliable but also takes care of all your needs and requirements. In order to get the best quality service at the most affordable rate, you have to know some of the essential factors. These are:
1. Experience
Experience is always preferable as it leads to good results. There are some new companies that often offer low prices to attract new clients. But due to lack of experience, they are not often able to cope up with various situations. So, while choosing this service it is recommended to ensure that the service is highly experienced in this particular industry.
2. Multi-talented
A multi-talented company is a great choice as they can handle various aspects of the production and assembly process. You must know first whether or not the service is able to handle various tasks related to this industry. Thus, in case you are stuck in a problem and need some help then they can help you.
3. Well Connected With Suppliers
The best part of being well-connected to the suppliers is that you can save a lot of money. If you appoint as team of professional experts from one of the best electronic assembly services, make sure the service is well connected. So, when you are buying any parts that you need for your company then you may get a lot of discount from the suppliers if your hired team has a strong bond with them.
4. Reliable & Reputed
Another important factor is reliability and credibility. In order to make sure that the service you are hiring is quite reliable, check the online reviews and feedbacks. This will help you to know more about the company and its reputation. Client’s feedbacks are always the best way to get a good idea about the quality of the service.
Also, make sure to check the service rates of all the electronic assembly services. But always choose the best service at the most affordable rate. Never ever compromise the quality to save your money. So, following these tips you can choose the best service for your company.

How thick is the copper foil on the PCB board?

Thick copper PCB items are availed largely in energy electronic units and power supply devices. A developing trend in the PCB field, this special kind of copper PCB has a completed copper weight of over 4oz when compared to 1oz and 2oz weight usually seen in the copper with a standard copper thickness. The extra copper PCB thickness helps the board to host a higher current, get good thermal supply and execute difficult switches in a restricted area.
1.PCB producing service:
Other benefits include raised mechanical power at connecter sites, the capacity to make a smaller item size by implementing more weights on the similar layer of circuitry and the capability to avail special materials to the optimum capacity with reduced risk of circuit failure. There are skilled PCB companies that can make and manufacture a best thick copper PCB goods of the best quality. They provide a PCB producing service that avails copper weights of about 15oz.It possess more number of years of experience in producing and organizing best functioning heavy and standard copper PCB goods that assist the customers get the productivity and profitability targets.

2.Printed circuit boards:
They create it a good performing methods to get the skilled engineers operate design for production on each circuit file and answer all questions and problems prior production. This assists to make sure the completed electronic boards satisfy your function desires. The capable employee cover in house quality control section, they promise the quality of the printed circuit boards. To make sure they can fabricate the copper PCB properly, it is necessary to take the higher width of traces and areas between the traces made by the raised weight of the copper in to account. A raising amount of power electronics goods are taking benefit of a developing trend in the industry.

3.Benefits:
Most of the commercially found PCBs are produced for low voltage and low energy applications, with copper plans and traces produced of copper weights ranging from half to three oz ft sq. A thick copper PCB is produced with copper weights between four to twenty ozft sq. The manufacturing of these thick copper give a board with benefits like raised current taking capacity, raised endurance to thermal strains, use of special material to the full potential, raised mechanical strength at connector sites, on board heat sinks plated on the board area, heavy copper plated vias take higher current by the board and assist to send heat to the outside heatsink. 

rigid flex circuit - important differences between flexible circuit boards and flexible circuit boards

Most people are not aware that they have been using an innovative idea called rigid flex circuits in their daily lives; a lot of us have seen PCB Boards when we drop our cell phones, tablets, laptops, or other electronic devices that are now mainstays of our contemporary digital era. Though we do not care much about, how it works, we do know that it works, and it is now integrated into almost everything that we use today. Everything from Aerospace, Military, to Household appliances, and daily transportation are now dependent on PCB technology since the late 80’s. Today, Rigid Flex Circuit boards that allow simpler, 3D, Robust, reliable, and movable circuit boards solve a lot of engineering challenges in creating a totally computerized mobile equipment.


Rigid Flex Circuit boards started with aerospace and defense, as the need for smaller, lighter, flexible, solutions to autonomous and semi-autonomous parts become apparent. Its transition to industrial and commercial applications comes naturally; however, manufacturers of Rigid Flex PCB such as Pioneer Circuits and Innovative Circuits are reporting a growing demand in the Medical Field.
Current Rigid Flex PCB with their inherent robustness, 3D application, light weight advantages was found to be the missing link to wearable medical monitors. This technology integrated with current Bluetooth or RF protocols created popular monitoring and lifesaving devices that we could not even dream about 20 years ago. Cardiology is one of the major beneficiaries of this advancement, Today, people with elevated risks of heart failure can now monitor their condition 24/7 through Rigid Flex PCB medical devices.
Development of semi-autonomous prosthetics for veterans is now in the works. The advantages of having a fully operational leg that can process proper balance using gyroscopic minute information on body weight, gravity, speed, traction, and other factors can greatly benefit our heroes who have sacrificed their limbs in the line of duty. Developmental Medical technology such as these, and current monitoring wearable devices have greatly increased demand for Rigid Flex PCB, and as the Boomers age further, Demand is expected to increase further.
The Medical Field have been using Rigid Flex Circuit boards since its inception, Large ECG, EEG, and modern X-Ray systems have been using it for years. But these are low volume high valued equipment. Today, mainstream personal application is the growing trend. FitBit is leading the way and soon, as prices become more reasonable, wearable medical monitors will also integrate into our lives.

2017年7月27日星期四

What are the forms of PCB assembly for electronic product assembly?

Electronic products assembly PCB assembly form:

I. single-sided assembly:

Incoming inspection of solder paste (adhesive point = > screen) = > > = > (curing) dry patch reflow soldering repair two = > = > = > cleaning detection, two-sided assembly;
A: A = > PCB incoming inspection screen printing solder paste (point adhesive patch) = > = > = > A (dry curing) surface cleaning reflow soldering turning plate PCB = > = > = > B (solder paste adhesive printing point) = > = > = > dry patch reflow soldering
                                             electronic assembly services
(best only for B = > = > > detection surface cleaning repair)
This process is applicable to the larger SMD, such as PLCC, on both sides of the PCB.
B: A = > PCB incoming inspection screen printing solder paste (point adhesive patch) = > = > = > A (dry curing) backstreaming repair B adhesive patch point = > = > = > B > wavesoldering curing surface cleaning detection of welding cleaning = > = > = > = > = > PCB) flap              electronic assembly services
This process is suitable for reflow soldering on the A surface of PCB, B wave soldering. In the B assembled on the PCB surface of the SMD, this process should be adopted only when the SOT or SOIC (28) pin is below.
Three, single mixing process:
Incoming inspection PCB A = > screen printing paste (point adhesive patch) = > = > drying (curing) = reflow soldering plug-in = > = > > cleaning = > = > = > repair cleaning detection

Four, double mixed process: A: B = > PCB incoming inspection points of adhesive curing flap patch = > = > > >
Repair A plug-in soldering cleaning = > = > = > = > PCB detection after stick plug, suitable for SMD more than the element separating element

B: A = > PCB plug-in incoming inspection (pin bending) = > flap = > PCB B = > > point of adhesive patch curing turning plate soldering = > = > > > = > repair cleaning detection
First insert and post, suitable for separating components more than SMD components

C: incoming inspection A = > PCB = > = > > drying screen printing paste patch reflow soldering > plug-in, pin bending turning plate =>PCB B = > = > = > point of adhesive patch curing turning plate soldering = > = > > > = > A detection repair surface cleaning mixed, B surface mount.

About thick copper PCB thickness

About PCB copper foil thickness
 Copper foil thickness refers to the thickness of the copper foil that covers the plate.
 1.PCB board national standard copper skin thickness is mainly 35um; 50um; 70UM thick copper PCB
 2., copper thickness of 150um for the PCB plate, manufacturers are basically using plating treatment, the process is difficult, the general manufacturers are reluctant to make, and the cost of ultra expensive, not suitable for mass production
 Recommendation: for the module of super power supply, if not the whole board needs 150um, we can consider adding tin by hand or adding copper core wire in parallel. This process is easy to operate and can be produced in large quantities.
 Circuit board thickness
 Circuit board thickness

 Talking about the thickness of PCB
 The thickness of a printed circuit board (PCB) refers to the thickness of the finished board. It shall be determined according to the function of the printed circuit board and the weight, size and mechanical load of the installed device and the specifications of the printed circuit board.
 The nominal thickness of CCL is 0.5, 0.7, 0.8, 1, 1.2, 1.5, 1.6, 2, 2.4, 3.2, and 6.4 mm. The nominal thickness of 0.7 and 1.5 mm paper base copper clad laminate and 0.5 and 1.5 mm glass cloth laminate for printed plug. The thickness tolerance of the printed plug area is very important, it will affect the reliable contact with the socket, so it must match the chosen socket. thick copper PCB
 1.5 mm thick printed boards are widely used in all kinds of electronic instruments and equipment. Because the thickness of the printed board is enough to support the weight of integrated circuits, medium and small power transistors and general resistance devices. Even if the printed board area is large to 500 x 500 mm, there is no problem. A large number of sockets are used in conjunction with this thickness of printed boards. thick copper PCB
 The printed board thickness of power supply should be thicker, because it needs to support heavier transformer, high-power device and so on. It can be used 2.0~3.0 mm thick. As for some small electronic products, such as electronic watches, calculators, etc., there is no need to choose such a thick sheet of material, 0.5 millimeters or thinner is enough. The thickness of a multilayer printed board is related to the number of plies, and the thickness of a multilayer board between 8 and 8 layers can be limited to about 1.5 millimeters. More than 8 layers should be more than 1.5 millimeters thick. The thickness of each layer of the circuit board is often determined by the electrical design.
 PCB thickness specification
 According to GB/T 4722, the thickness of PCB has the following series:
 Fine deviation of thickness deviation 0.5 /
 +/-0.070.7 +/-0.15 +/-0.090.8
 +/-0.15 +/-0.091.0 +/-0.17
 +/-0.111.2 +/-0.18 +/-0.121.5
 +/-0.20 +/-0.141.6 +/-0.20
 +/-0.142.0 +/-0.23 +/-0.152.4
 +/-0.25 +/-0.183.2 +/-0.30
 +/-0.206.4 +/-0.55 +/-0.30

PCB CIRCUIT BOARDS – IMPORTANT DIFFERENCES BETWEEN FLEXIBLE CIRCUIT BOARDS AND FLEXIBLE CIRCUIT BOARDS

1) the three-dimensional space of a flexible printed circuit is important because the application of flex and flexibility can save space and reduce the board level.
2) compared with rigid plates, flexible plates require less tolerance and allow greater tolerance.  rigid flex circuits
3) because the wings can be bent, they are designed to be a little longer than required.
In order to minimize circuit cost, the following design techniques should be considered:
1) always consider how the circuit is assembled on the panel.
2) circuit should be small, should consider using a series of small circuit instead of a large circuit.
727-0
 rigid flex circuits
3) follow the recommended use tolerances at all times.
4) design the areas where the elements are bonded only where necessary.
5) if the circuit has only a few layers, then the use of an enhancement board is much cheaper than that of a rigid flexible printed circuit.
6) a 0.0001 in binder shall be used on each of the oz cladding materials (including copper plated).
7) circuits that make unshielded pads without covering are sometimes cheaper.

2017年7月25日星期二

Core content of electronic assembly service

1.market demand
This report is from the following four analysis and Research on the market demand of the electronic assembly service industry:
a>The growth rate of consumption and an user scale: Based on the analysis of the past five consecutive years China market for electronic assembly service industry growth and an user consumption scale, determine the electronic assembly service industry of economy of scale and growth, and growth of the scale of consumer trends in the next five years is predicted, this part of the presentation of the contents as "text + the chart data (column chart)".
b>Product structure: from multiple angles (1-3), the classification of electronic assembly service industry products and services, and give each segment of products and services in the industry and user consumption scale in proportion, to help customers take advantage of the electronic structure of assembly service industry products in general; this part of the presentation of the contents as described in the text + data charts (pie)".
c>Market distribution: from the user's geographical distribution and consumption capacity and other factors, to analyze the market distribution of electronic assembly services industry, and focus on the regional market consumption of larger scale consumption were analyzed, including the scale of consumption, consumer characteristics, product structure and so on; this part of the presentation of the contents as described in the text the data (tables, charts and pie charts)".
d>User research: the main study of consumer behavior, including user concerns, product factors, frequency of purchase, purchase channels,...
2.Competition pattern
This report mainly by market share index to analyze the competitive landscape ofelectronic assembly service industry, the breakdown of products and services gives the same market share index and competition pattern analysis, and according to the market share and market influence competition grouping of mainstream enterprises, and analyze the characteristics of each competition group; in addition, through the analysis of strategic trends the main business investment, dynamic and new entrants to the investment heat, market entry strategy, to judge the trend of future electronic assembly service industry competition pattern.
3.Benchmarking enterprise
Study on benchmarking enterprise is the core and foundation in the research field of the report, because the business models is equivalent to industry research sample, so the development of a certain number of benchmarking enterprises, largely reflects the mainstream trend of the development of an industry. This report carefully selected electronic assembly industry in large scale and the most representative 5-10 benchmark enterprises were investigated, including the basic situation of each enterprise, product system, data management, technical advantages, development trend etc.. This report can also adjust the number and selection method of benchmarking enterprises according to customer requirements.
4.Investment opportunity
The Research Report on electronic assembly service industry investment opportunities for investment opportunities of investment opportunities and specific research projects, general investment opportunities mainly from the perspective of sub products, regional market, industry chain analysis and evaluation of investment opportunities, mainly for specific projects to be built in the electronic assembly industry and seek cooperation projects of survey and evaluation.

4 tips to electronic companies to outsource Electronic Assembly Services

 It is always a wiser decision for any small and medium electronic companies to outsource electronic assembly services. It can help you to save a lot of money by working with the third-party professionals rather than hiring a full team to do this work. Even, you will not have to buy or maintain the expensive equipment and tools that are needed for this service. So, you have to find the best service which is not only reliable but also takes care of all your needs and requirements. In order to get the best quality service at the most affordable rate, you have to know some of the essential factors. These are:



1. Experience


Experience is always preferable as it leads to good results. There are some new companies that often offer low prices to attract new clients. But due to lack of experience, they are not often able to cope up with various situations. So, while choosing this service it is recommended to ensure that the service is highly experienced in this particular industry.



2. Multi-talented


A multi-talented company is a great choice as they can handle various aspects of the production and assembly process. You must know first whether or not the service is able to handle various tasks related to this industry. Thus, in case you are stuck in a problem and need some help then they can help you.



3. Well Connected With Suppliers


The best part of being well-connected to the suppliers is that you can save a lot of money. If you appoint as team of professional experts from one of the best electronic assembly services, make sure the service is well connected. So, when you are buying any parts that you need for your company then you may get a lot of discount from the suppliers if your hired team has a strong bond with them.



4. Reliable & Reputed


Another important factor is reliability and credibility. In order to make sure that the service you are hiring is quite reliable, check the online reviews and feedbacks. This will help you to know more about the company and its reputation. Client’s feedbacks are always the best way to get a good idea about the quality of the service.


Also, make sure to check the service rates of all the electronic assembly services. But always choose the best service at the most affordable rate. Never ever compromise the quality to save your money. So, following these tips you can choose the best service for your company

What is thick copper PCB and its benefits written by: Dharshini What is thick copper PCB and its benefits

Thick copper PCB items are availed largely in energy electronic units and power supply devices. A developing trend in the PCB field, this special kind of copper PCB has a completed copper weight of over 4oz when compared to 1oz and 2oz weight usually seen in the copper with a standard copper thickness. The extra copper PCB thickness helps the board to host a higher current, get good thermal supply and execute difficult switches in a restricted area.

PCB producing service:

Other benefits include raised mechanical power at connecter sites, the capacity to make a smaller item size by implementing more weights on the similar layer of circuitry and the capability to avail special materials to the optimum capacity with reduced risk of circuit failure. There are skilled PCB companies that can make and manufacture a best thick copper PCB goods of the best quality. They provide a PCB producing service that avails copper weights of about 15oz.It possess more number of years of experience in producing and organizing best functioning heavy and standard copper PCB goods that assist the customers get the productivity and profitability targets.


Printed circuit boards:

They create it a good performing methods to get the skilled engineers operate design for production on each circuit file and answer all questions and problems prior production. This assists to make sure the completed electronic boards satisfy your function desires. The capable employee cover in house quality control section, they promise the quality of the printed circuit boards. To make sure they can fabricate the copper PCB properly, it is necessary to take the higher width of traces and areas between the traces made by the raised weight of the copper in to account. A raising amount of power electronics goods are taking benefit of a developing trend in the industry.


Benefits:

Most of the commercially found PCBs are produced for low voltage and low energy applications, with copper plans and traces produced of copper weights ranging from half to three oz ft sq. A thick copper PCB is produced with copper weights between four to twenty ozft sq. The manufacturing of these thick copper give a board with benefits like raised current taking capacity, raised endurance to thermal strains, use of special material to the full potential, raised mechanical strength at connector sites, on board heat sinks plated on the board area, heavy copper plated vias take higher current by the board and assist to send heat to the outside heatsink.

2017年7月24日星期一

Rigid Flex Circuit Manufacturers are reporting steady growth from their Medical Electronics Division

     Most people are not aware that they have been using an innovative idea called rigid flex circuits in their daily lives; a lot of us have seen PCB Boards when we drop our cell phones, tablets, laptops, or other electronic devices that are now mainstays of our contemporary digital era. Though we do not care much about, how it works, we do know that it works, and it is now integrated into almost everything that we use today. Everything from Aerospace, Military, to Household appliances, and daily transportation are now dependent on PCB technology since the late 80’s. Today, Rigid Flex Circuit boards that allow simpler, 3D, Robust, reliable, and movable circuit boards solve a lot of engineering challenges in creating a totally computerized mobile equipment.

Rigid Flex Circuit boards started with aerospace and defense, as the need for smaller, lighter, flexible, solutions to autonomous and semi-autonomous parts become apparent. Its transition to industrial and commercial applications comes naturally; however, manufacturers of Rigid Flex PCB such as Pioneer Circuits and Innovative Circuits are reporting a growing demand in the Medical Field.
Current Rigid Flex PCB with their inherent robustness, 3D application, light weight advantages was found to be the missing link to wearable medical monitors. This technology integrated with current Bluetooth or RF protocols created popular monitoring and lifesaving devices that we could not even dream about 20 years ago. Cardiology is one of the major beneficiaries of this advancement, Today, people with elevated risks of heart failure can now monitor their condition 24/7 through Rigid Flex PCB medical devices.
Development of semi-autonomous prosthetics for veterans is now in the works. The advantages of having a fully operational leg that can process proper balance using gyroscopic minute information on body weight, gravity, speed, traction, and other factors can greatly benefit our heroes who have sacrificed their limbs in the line of duty. Developmental Medical technology such as these, and current monitoring wearable devices have greatly increased demand for Rigid Flex PCB, and as the Boomers age further, Demand is expected to increase further.

The Medical Field have been using Rigid Flex Circuit boards since its inception, Large ECG, EEG, and modern X-Ray systems have been using it for years. But these are low volume high valued equipment. Today, mainstream personal application is the growing trend. FitBit is leading the way and soon, as prices become more reasonable, wearable medical monitors will also integrate into our lives.

Core content of electronic assembly service

This report is from the following four analysis and Research on the market demand of the electronic assembly service industry:
a>The growth rate of consumption and an user scale: Based on the analysis of the past five consecutive years China market for electronic assembly service industry growth and an user consumption scale, determine the electronic assembly service industry of economy of scale and growth, and growth of the scale of consumer trends in the next five years is predicted, this part of the presentation of the contents as "text + the chart data (column chart)".
b>Product structure: from multiple angles (1-3), the classification of electronic assembly service industry products and services, and give each segment of products and services in the industry and user consumption scale in proportion, to help customers take advantage of the electronic structure of assembly service industry products in general; this part of the presentation of the contents as described in the text + data charts (pie)".
c>Market distribution: from the user's geographical distribution and consumption capacity and other factors, to analyze the market distribution of electronic assembly services industry, and focus on the regional market consumption of larger scale consumption were analyzed, including the scale of consumption, consumer characteristics, product structure and so on; this part of the presentation of the contents as described in the text the data (tables, charts and pie charts)".
d>User research: the main study of consumer behavior, including user concerns, product factors, frequency of purchase, purchase channels,...
2.Competition pattern
This report mainly by market share index to analyze the competitive landscape ofelectronic assembly service industry, the breakdown of products and services gives the same market share index and competition pattern analysis, and according to the market share and market influence competition grouping of mainstream enterprises, and analyze the characteristics of each competition group; in addition, through the analysis of strategic trends the main business investment, dynamic and new entrants to the investment heat, market entry strategy, to judge the trend of future electronic assembly service industry competition pattern.
3.Benchmarking enterprise
Study on benchmarking enterprise is the core and foundation in the research field of the report, because the business models is equivalent to industry research sample, so the development of a certain number of benchmarking enterprises, largely reflects the mainstream trend of the development of an industry. This report carefully selected electronic assembly industry in large scale and the most representative 5-10 benchmark enterprises were investigated, including the basic situation of each enterprise, product system, data management, technical advantages, development trend etc.. This report can also adjust the number and selection method of benchmarking enterprises according to customer requirements.
4.Investment opportunity
The Research Report on electronic assembly service industry investment opportunities for investment opportunities of investment opportunities and specific research projects, general investment opportunities mainly from the perspective of sub products, regional market, industry chain analysis and evaluation of investment opportunities, mainly for specific projects to be built in the electronic assembly industry and seek cooperation projects of survey and evaluation.


PCB copper thin thickness

The assembly of electronic equipment, in the electric circuit, is the circuit connection of the electronic component with the printed circuit board as its support body. Structurally, the metal hardware and model housings that comprise the product are mounted by means of fastening parts or other methods from the inside to the outside in a certain order. Electronic products belong to technology intensive products, and the main characteristics of assembling electronic products and assembling and processing of finished products are these:
 1, Assembly work is made up of a variety of basic technologies. Such as component selection and lead forming technology, wire processing technology, welding technology, installation technology, quality inspection technology, etc.thick copper PCB

 2, Assembly operation quality, in many cases, it is difficult to quantitative analysis. Such as the quality of welding is good or bad, usually with visual judgment, the assembly quality of dial, knob, etc.Therefore, it is very necessary to master the correct method of installation and operation. thick copper PCB
 3, Assembly work personnel must be trained and selected, after passing the examination certificates, otherwise, due to the lack of knowledge and technical level is not high, it may produce defective products, and once in one hundred percent ones, could not be checked, there is no guarantee of product quality.thick copper PCB

Where are the differences between rigid and flexible printed circuit board designs?

Many people have heard the English abbreviation for "PCB". But what does it mean? In fact, simply, it is printed circuit board. It will appear in almost every kind of electronic equipment. If there are electronic components in a particular device, they are mounted on PCB of different sizes. In addition to fixing various small parts, the main function of PCB is to provide the electrical connections between the parts above. rigid flex circuits

As electronic equipment becomes more and more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more intensive. Bare panels (with no parts on it) are also often referred to as "printed circuit boards ". The substrate of the board itself is made of insulation, heat insulation and material which is not easily bent. The fine lines can be seen on the surface of the material is copper foil, copper foil is covered in the original on the board, and in the manufacturing process partly etched off, left to the part of a network of thin wires. These lines are called wires (conductor pattern), or wiring, and are used to provide circuit connections for parts on the PCB. rigid flex circuits
Usually the colors of PCB are green or brown, which is the color of solder mask. It is an insulated protective layer that protects the copper wire and prevents the parts from being soldered to the wrong place. A layer of screen printing is also printed on the solder resist. Usually, letters and symbols (mostly white) are printed on it to mark the location of the parts on the board. The screen printing surface is also called the legend.rigid flex circuits

2017年7月20日星期四

What is the thickness of PCB copper produced by PCB boards?

There are several types of bare board electrical testing. Continuity/discontinuity (testing for opens or shorts), insulation resistance (assures sufficient conductor spacing), dielectric withstanding voltage (assures sufficient dielectric thickness), conductor resistance (assures correct conductor cross-sectional area) and capacitance (assures correct dielectric thickness) are some of the electrical tests available. Epec performs all bare board testing according to IPC-9252. Some electrical testing (such as conductor resistance) is difficult to perform and is normally only performed on certain customer specified conductors that have a tight operational range.

There are several types thick copper PCB

There are several types of bare board electrical testing. Continuity/discontinuity (testing for opens or shorts), insulation resistance (assures sufficient conductor spacing), dielectric withstanding voltage (assures sufficient dielectric thickness), conductor resistance (assures correct conductor cross-sectional area) and capacitance (assures correct dielectric thickness) are some of the electrical tests available. Epec performs all bare board testing according to IPC-9252. Some electrical testing (such as conductor resistance) is difficult to perform and is normally only performed on certain customer specified conductors that have a tight operational range.
                                                       thick copper PCB

How does the layout of a flex differ from a rigid?

 How does the layout of a flex differ from a rigid?  I see on a PCB manufacturers website I need to do a stiffener?  Also indicate base material, copper thickness, cover layer thickness, as well as stiffener material and thickness.  Any help anyone can give or point to that will help me figure out how to do flex layouts would be very apprciated.
                                                       rigid flexible PCB

2017年7月19日星期三

Great Electronic Assembly Services for You

POE is a company that provides electronic assembly services and that produces PCB board for many years. POE develops very quickly since its establishment in 1996, and now our production capacity can reach 40000 sq.m. per month and EMS assembling capacity at 150,000,000 components per month.

POE has become a very stable and healthy company. Our achievements are fully affirmative and supported by the government. POE Electronics is ISO 9001:2008, ISO 13485:2003 and AS9100C certified and has been ITAR registered and RoHS compliant. As the leading brand of electronic assembly services, POE is going to undertake social responsibility and mission, fully participate in international competition, and strive to become the world-class PCB manufacturer.

                                                electronic assembly services

POE can offer a full range of electronic assembly services from PCB designing, manufacturing to PCB assembling, testing and housing, and full Supply Chain Management and other Circuit Board Assembly Services. Every aspect of our PCB and flex circuit operation – including our full range of design services, fabrication and electronic assembly – is done in-house. Besides, Power Design Services’ printed circuit board services, including electronic assembly, have played a critical role in creating many innovative products over the years, from simple gadgets to advanced equipment commonly used in industry and by consumers. We make product development more efficient with an experienced team, speedy turnaround, and design, manufacture and electronic assembly that is second to none.

We specialize in the Industrial, Automotive, Defense & Aerospace, Medical and Homeland Security markets for all your electronic assembly services. Our team of skilled program managers, process engineers, production personnel and procurement professionals are focused on meeting your delivery, quality and pricing needs. Our commitment to Lean Manufacturing has increased our flexibility and productivity, reduced costs and waste, and enabled us to maintain tight controls on product quality in order to offer you lower costs than our competition. The Enclosures piece parts are procured and fully assembled by our Electronic Manufacturing Facility. Standard units include Motherboards, Processor Boards and LCD Displays, Tested and Badged for end customer use. They provide reliable non contacting ultrasonic level and volume measurement, high specification pump control and open channel flow measurement to international standards of electronic assembly services.

Although our operation is mostly automated, we never forget the human side of electronic assembly services, PCB design, or fabrication. Outstanding customer service is one of the tenets on which our company was founded. Our clients know they are free to consult with our assembly and engineering teams during the process. We enjoy the collaborative process and pride ourselves on being responsive and flexible should specifications change on any project. We’ll work closely with you to get the details right. Part of our success stems from the fact we rigorously test our printed circuit boards throughout the creative process. Flaws are rooted out early so our clients are assured the prototypes of electronic assembly services we deliver are reliable and function according to design.

Moreover, personal service is paramount. You'll have a one-on-one relationship with expert and skilled technicians that know your projects, schedules and high standards. We deliver exceptional products. Each item is checked and re-checked before it leaves the facility with our sophisticated quality control technologies, as our mission is to deliver superior products and great electronic assembly services to satisfied customers, on time, every day.

Our proximity to the airport facilitates quick delivery, so as to make product development more efficient with an experienced team, speedy turnaround, and design, manufacture and electronic assembly that is second to none. We keep minding ourselves that we should provide great electronic assembly services to satisfy our customers.

POE operates as an electronic assembly services provider and electronic manufacturing company. It specializes in PCB designing, manufacturing and electronic assembly. We sincerely hope that our expert and services could meet your satisfaction and help to solve your problem.

Our electronic assembly services is a very good service provider

Design rule checking (DRC) is a very important step in PCB quality control. Our electronic assembly service will check the PCB design constraints and rules, networks, and layouts through the DRC.
Check the component layout for the overlap of the board and track, routing the full Untraced pin, incorrect placement and constraint layer, where to set routing and gap width. We also do rule checking to ensure the manufacturability of the PCB design. If any errors are detected, our electronic assembly services will contact the customer.

We provide an fiex PCB manufacturing incredibly simple way

We are here to support you with innovation on products you create. Ranging from circuit boards for simple LED designs, to complex medical devices, and even quantum computers, we want to help you accomplish your goals in the most responsive manner possible.

Whether you are struggling with tight tolerances, supply issues, impossible design timelines, or simply need knowledgeable information about printed circuit boards, turn to Omni. We know that printed circuit board manufacturing challenges are as wide ranging as the customer base we support. No board is too large or too small for us.

Omni's circuit boards can be found in some of the most punishing environments on the planet, in research, and in development projects. We strive to build the circuit board layouts you design that affect how we work and how we live.We’re finally ready to make electricity work for us! If we connect the positive side of a voltage source, through something that does some work such as a Light Emitting Diode (LED), and back to the negative side of the voltage source; electricity, or current, will flow. And we can put things in the path that do useful things when current flows through them, like LEDs that light up.
This circular path, which is always required to get electricity to flow and do something useful, is called a fiex PCB manufacturing. A circuit is a path that starts and stops at the same place, which is exactly what we’re doing.
fiex PCB manufacturing.This simulation requires Java to run.
 they come out of the negative side and loop back to the positive side. Because engineers followed Franklin’s lead for hundreds of years before the truth was discovered, we still use the “wrong” convention to this day. Practically speaking this detail doesn’t matter, and as long as everyone uses the same convention, we can all build circuits that work just fine.
                                                fiex PCB manufacturing

The color of just flexible PCB

In applications where fine conductive traces are needed, such as computers, rigid flexible PCB are made by a photolithographic process, in a larger scale version of the way conductive paths in processors are made.

Electronic components are typically placed by machine onto a finished PCB that has solder dabs in place. The PCB bakes in an industrial oven to melt the solder, which joins the connections. Most PCBs are made from fiberglass or glass-reinforced plastics with copper traces.
PCBs can be single-layer for simple electronic devices. Printed circuit boards for complex hardware, such as computer graphics cards and motherboards, may have up to twelve layers. rigid flexible PCB are most often green but they can come in any color.
Click on any of the three images for a very large version
Bog-standard green with white silkscreen. Boring eh? Maybe so but green is probably the best of all the available colours in practical terms. The contrast between traces, planes and vacant space is high so you can inspect your boards easily with the naked eye to check for manufacturing defects. The white silkscreen contrasts well with the soldermask and flux residue cleans up well leaving a professional looking board.
Don’t be so quick to dismiss green as your choice of colour because if your board routing is a work of art then green might just be the best colour to show it off.
Red
Click on any of the two images for a very large version
I like red, it’s bold and it looks professional. The contrast between traces, planes and empty space is good, but noticeably lower than on a green board. Inspection of fine traces on the board for defects is best done with some form of magnification. Silkscreen stands out well against the red background and flux residues clean up well, just as well as on a green board.
Red can look bold and eye-catching, though not exactly unique since everyone’s doing it these days. If you want your beautiful routing to be the star of the show then green is still the best bet.
Blue
Click on any of the three images for a very large version
It’s a dark blue, the same as the one used on the Arduino. The contrast between traces, planes and empty space is quite low now and magnification is mandatory to inspect for manufacturing defects. On the plus side contrast between silkscreen and soldermask is very high so if your board is label-heavy then blue might be for you.
I also find that the combination of black integrated circuits, black pin headers and silver coloured connectors is aesthetically pleasing and looks very professional. This is also a good colour for mounting an LCD against as your eye is not drawn away from the screen by bright background colours and sharply contrasting edges.
Blue doesn’t clean up as well as red and green. As a dark colour it is prone to showing off dirt and if you’re not careful then flux stains can be stubborn to remove.
Blue can be a good choice if you’re not bothered about showing off the traces on your board or you need to match colours with your Arduino shield design against an Arduino host.
Black
Go on, click on them…
I don’t know what it is about gloss black that makes me keep coming back and choosing it? The contrast between traces, planes and empty space is virtually non-existent. Inspection of the board not only requires powerful magnification but you also have to angle a light just so it casts a shadow where the traces raise slightly above the board. A total nightmare to inspect.
At least the silkscreen contrasts well; in fact the silkscreen and the pads are pretty much all you can see on the board without optics and lighting to help you. At the time of writing only gloss black is available. The extremely cool matte black is yet to become available at the prototyping services.
Another peril with black is the way that it absorbs heat during reflow. You have to either scale down your profile or make sure that your temperature sensor is actually placed on the board itself. The silkscreen is also prone to turning light brown during reflow, presumably because the board under it takes on so much heat.
Cleaning is very hard indeed. It’s not that the flux stains are harder to remove; it’s that if you tilt the board to the light to see your routing then you also see where all the stains were!

2017年7月18日星期二

PCB Troubleshooting

Printed circuit boards,rigid flexible PCB, are a mass of insulators and copper traces that connect densely packed components together to create a modern circuit. Troubleshooting a multi-layer rigid flexible PCB is often quite a challenge, with factors such as size, number of layers, signal analysis, and types of components playing a large role in the ease of troubleshooting. Some more complicated boards will require specialized equipment to properly troubleshoot, but most troubleshooting can be done with basic electronic equipment to follow traces, currents, and signals through the circuit.