Ping You Industrial Co.,Ltd
SMT Equipment Spare Parts Supplier&
PCB PCBA processing and production
Payment & Shipping Terms:
|Color:||Green,Blue||Number Of Plies:||4Layer|
|Copper Thickness::||4oz||Base Material::||FR4 ,Hight TG|
|Board Thickness::||1.0～1.2mm||Place Of Origin::||Guangdong, China (Mainland)|
|Surface Finishing::||HASL(lead Free)|
4oz PCB Printed Circuit Board,
HASL PCB Printed Circuit Board,
FR4 PCB Board Assembly
2 Layer HASL FR4 4oz PCB Printed Circuit Board Assembly
|High precision prototype||PCB bulk production|
|Max Layers||4 layers||4 layers|
|MIN Line width(mil)||5mil||2mil|
|MIN Line space(mil)||5mil||2mil|
|Min via (mechanical drilling)||Board thickness≤1.2mm||0.2mm||0.3mm|
|Board thickness＞2.5mm||Aspect Ration≤13:1||Aspect Ration≤13:1|
|MIN||4 layers:0.35mm;||4 layers:0.4mm;|
|MAX Board size||550*1100mm||550*1100mm|
|Max copper thickness||2.5oz||3oz|
Gold Plated Thickness
Nickel Plated :50—500u”
|Hole copper thick||25um 1mil||25um 1mil|
|MIN Solder mask bridge||0.05mm||0.1mm|
|Plugging Vias capability||0.40mm||1.00mm|
The needle bed process
This method consists of spring-loaded probes connected to each check point on the circuit board.Springs apply a pressure of 100 to 200g to each probe to ensure good contact at each test point. This array of probes is called a "needle bed".Under the control of testing software, testing points and testing signals can be programmed. Figure 14-3 is a typical needle-bed tester structure, and the tester can obtain the information of all test points.In fact, only those test points for which the probes need to be tested have been installed.When designing a board, all test points should be on the soldered surfaces of the board, although it is possible to test both sides of the board simultaneously using the needle bed test method.Needle bed tester equipment is expensive and difficult to maintain.The needle selects different arrays of probes depending on its specific application.
A basic general-purpose raster processor consists of a drilled plate with pins spaced 100, 75, or 50mil apart from the center.The pins act as probes and make direct mechanical connections using electrical connectors or nodes on the circuit board.If the pad on the board matches the test grid, the polyvinaigrel film perforated according to the specification is placed between the grid and the board to facilitate the design of a specific probe.Continuity detection is achieved by accessing the end points of the grid, which have been defined as the x-y coordinates of the pads.Since every network on the circuit board is tested for continuity.An independent test is done.However, the proximity of the probes limits the effectiveness of the needle-bed method.
Portable video microscope A200 circuit board contrast observation
Portable video microscope A200 circuit board contrast observation
Handheld wireless microscope WM401TVPC to observe circuit board
Handheld wireless microscope WM401TVPC to observe circuit board
The circuit board is small in size and complex in structure, so the observation of the circuit board must also use professional observation instruments.Generally, we use a portable video microscope to observe the structure of the circuit board. Through the video microscope camera, we can clearly see the very intuitive microstructure of the circuit board from the microscope.In this way, it is easier for us to design and test the circuit board.The portable video microscope used in the factory site, the portable video microscope MSA200 and VT101, because it can realize "observation at any time, detection at any time, many people discuss" is more convenient than the traditional microscope!
Flying probe test
The flying pin tester does not depend on the pin pattern mounted on the fixture or bracket.Based on this system, two or more probes are mounted on tiny magnetic heads that move freely in the X-Y plane, and the test points are directly controlled by CADI Gerber data.The two probes can move within a distance of 4mil from each other.The probes can move independently, and there is no real limit to how close they can get to each other.The tester with two arms that move back and forth is based on the measurement of capacitance.The circuit board is pressed against an insulating layer on a metal plate that acts as another metal plate for the capacitor.If there is a short circuit between the lines, the capacitance will be greater than at a certain point.If there is a - break, the capacitance will decrease.
Test speed is an important criterion for selecting tester.Pin-bed testers can accurately test thousands of test sites at a time, whereas flying needle testers can only test two or four test sites at a time.Depending on the complexity of the board, a needle-bed tester may cost as little as 20-305 for a single test, whereas a flying needle tester may require IH or more to complete the same evaluation.Shipley (1991) explains that even though manufacturers of high volume printed circuit boards consider mobile flypin testing techniques slow, this method is a good option for manufacturers of lower volume complex circuit boards.
For bare-board testing, there are special test instruments (Lea,1990).A more cost-effective approach is to use a general-purpose instrument. Although this type of instrument is initially more expensive than a dedicated instrument, its initial high cost will be offset by a reduction in the cost of the individual configuration.For general purpose grids, the standard grid for boards with pin components and surface mount devices is 2.5mm.The test pad should be greater than or equal to 1.3mm.For IMM grids, test pads are designed to be larger than 0.7mm.If the grid is small, the test pin is small, brittle, and prone to damage.Therefore, a grid larger than 2.5mm is preferred.Crum (1994b) states that the combination of a universal tester (a standard grid tester) and a flying needle tester enables accurate and economical testing of high-density circuit boards.Another approach he suggests is to use a conductive rubber tester, a technique that can be used to detect points that deviate from the grid.However, different heights of hot air leveling pads will hinder the connection of the test points.
The following three levels of detection are usually performed:
1) Bare board testing;
2) Online detection;
3) Functional detection.
The general type tester can be used to test a type of style and type of circuit boards, and can also be used for special applications.
Circuit board maintenance is a new repair industry.The degree of automation of industrial equipment is getting higher and higher, so the number of industrial control board in various industries is also more and more. After the damage of industrial control board, the high cost required to replace the circuit board (at least thousands of yuan, more than tens of thousands or hundreds of thousands of yuan) has also become a very headache for enterprises.In fact, the vast majority of these damaged circuit boards can be repaired in China, and the cost is only 20%-30% of the purchase of a new board, and the time used is much shorter than the foreign fixed board.The following introduces the basics of circuit board maintenance.
Almost all of the circuit board maintenance without drawing materials, so a lot of people are skeptical of circuit board maintenance, although all kinds of circuit boards differ in thousands ways, but the same is each circuit board is composed of integrated blocks, resistor, capacitor and other components, so the damage of circuit board must be the result of a damaged one or several components, circuit board maintenance is established based on the above factors.Circuit board maintenance is divided into detection and maintenance of two parts, among which detection occupies a very important position.Each device on the circuit board to repair the basic knowledge of the test, until the bad parts are found to replace, then a circuit board is fixed.
Circuit board detection is the process of finding, determining and correcting the fault of every electronic component on the circuit board.In fact, the whole testing process is a thinking process and the test process of providing logical reasoning clues, so the testing engineer must gradually accumulate experience and constantly improve the level of the circuit board maintenance, testing and overhaul.General electronic equipment is composed of tens of thousands of components, in the maintenance, overhaul, if rely on direct one test inspection of each component in the circuit board to find the problem will be very time-consuming, the implementation is also very difficult.Then from the fault phenomenon to the fault cause of the checkmark type maintenance method, is an important maintenance method.Once the problem is detected, it is easy to repair the board.The above is the introduction of the basic knowledge of circuit board maintenance.
Circuit board is the most active industry in the contemporary electronic component industry, its industry growth rate is generally higher than the electronic component industry about 3 percentage points.
Printed circuit board Aluminum based circuit board
Printed circuit board is the most active industry in the contemporary electronic components industry, its industry growth rate is generally higher than the electronic components industry about 3 percentage points.It is expected that 2006 will still maintain rapid growth, demand upgrading and industrial transfer is the basic driving force to promote the development of the industry, and HDI board, flexible board, IC packaging board (BGA, CSP) and other varieties will become the main growth points.
In 2003, the output value of printed circuit boards in China was 50.069 billion yuan, an increase of 333% year on year, exceeding that of the United States, which ranks second in the world for the first time.In 2004 and 2005, China's PCB output value still maintained a growth rate of more than 30%, estimated 2005 reached 86.9 billion yuan, far higher than the growth rate of the global industry.
Flexible circuit board
Flexible circuit board in the smart phone represented by the rapid development of electronic devices to miniaturization direction, so it is widely used in many electronic equipment market segments, on the one hand, the product tends to miniaturization;On the other hand reliability.It is expected that by 2016, the global output value of flexible circuit boards will reach $13.2 billion, with a CAGR of 7.5%, making it one of the fastest growing sub-sectors in the electronics industry.
From the development form, China's circuit board industry continues to grow at a high speed, the import and export has also achieved a rapid growth, with the industrial growth is gradually optimized and improved.
The reason the PCB has been used more and more widely is because it has many unique advantages, including the following.
1.Can be densified.For decades, the high density of printed boards has been able to develop with the improvement of integrated circuit integration and installation technology.
2.High reliability.Through a series of inspections, tests and aging tests, the PCB can be guaranteed to work reliably for a long time (service life, generally 20 years).
3.Designability.For all kinds of performance requirements of PCB (electrical, physical, chemical, mechanical, etc.), we can realize the design of printed board through design standardization, standardization, etc., with short time and high efficiency.
Productive.Adopt modern management, can carry out standardization, scale (quantity), automation and other production, to ensure the consistency of product quality.
4.Testability.Set up a relatively complete test method, test standard, a variety of test equipment and instruments to detect and identify the quality and service life of PCB products.
5.Assemblability.PCB products are not only convenient for various components to be standardized assembly, but also can be automated, large-scale mass production.At the same time, PCB and various components assembly parts can also be assembled into larger components, systems, until the complete machine.
6.Maintainability.Because PCB products and various component assembly parts are standardized in design and mass production, these parts are also standardized.Therefore, once the system fails, it can be replaced quickly, conveniently and flexibly, and the work of the system can be restored quickly.
There are, of course, many more examples.Such as miniaturization of the system, light weight, signal transmission speed and so on.
Pingyou Industrial Co., Ltd
Provides the World′s Quickest - PCB Board Design to Loaded Assembly. If getting your design manufactured and to the marketplace first is critical to your success Pingyou Industrial is a great solution. No one beats our New Product Introduction (NPI) and New Product Development (NPD) capabilities. Zhongrun High-tech supports "ANY" or "ALL" of your PCB Board: Design, Layout, Bare Board Fabrication, Assembly, and Complete Box Build needs.
Pingyou Industrial offers the "World′s Quickest" service through our unique and dynamic capabilities. We control the entire process - Idea thru. Finish Product - and have the systems in place to seamlessly process from one step to another. This allows unparalleled cycle time reduction. Pingyou Industrial also eliminates the blame game, as we can handle it all.
1. Are you headquarter or branch?
We are Ping you headquarter and factory.
2. Can I ask for samples before placing an order?
Yes, we welcome sample order to test and check quality,Miced samles are acceptable.
3. How to be your overseas agent?
Depends which area you are located in,Every conuntries are different.
4. What need I do if I want to pint my own logo?
First, please send us your logo flie in high resolution, We will make some drafts for your reference to confirm the position and size of your logo.Next we will 1-2 samples for you to check the actual effect.Finally the formal production will start after the sample confrimed .
5. Can you ship the goods to my agent or shipping forwarder in China?
Yes,We can,please kindly contact with your agent in advance and us detailed address.
6. How can you solve the problem if receive the defective goods?
Will check all the products before delivery,Please kindly provide the pictures or video and send back to china or our local agent,After they checking,will replace new or fix free.
Contact Person: PYPCB-Vera