The necessary of PCBA functional testing procedure First of all, we should know that PCBA functional testing is following customer’s test procedures. This means that all of the test items are depending customers’ requirements. This is a quality assurance process. To ensure all functions is same with design. PCBA Functional testing different with ICT You […]
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PCBA ICT procedure introduces ICT is short for In-Circuit Test. 4MCPCB experts told us that ICT is an example of white box testing. Simple say is use an electrical probe test a populated printed circuit board. Most of PCBA factories will use an ICT mould to testing. The items of PCBA ICT procedure There were […]
AOI testing is a normal method for electronic industry. In PCB manufacturing and PCA assembly process, also have to AOI testing procedure. Top three items of AOI testing procedure AOI testing: Missing componet checking First of all, Frank has to clear that different testing items in PCBA with PCB manufacture. Here we discuss will be […]
Why we should use X-ray inspection during PCBA testing There were two reasons resulting use x-ray inspection during PCB testing. The first one is newer type components use in PCBA. Like BGA and flip-chip devices, make PCBA become more complex. Then is due to traditional microscope inspection have obvious shortage. In most of solder connections […]
The reason why we discuss Visual inspection There were many kinds of PCB testing procedure. Visual inspection is the basically one. Almost all PCBA factories have visual inspection procedure. This paper will introduce this basically PCBA testing procedure visual inspection for most new guys. The definition of visual inspection Visual Inspection used in maintenance of […]
PCBA service Frequently asked questions As a cost-effective PCBA service provider, delivering high quality PCB over the world. There were some purchases don’t much about PCBA service, special some complex PCBA projects. To help those guys, and some new guys, 4MCPCB expert have summary some PCBA service FAQ. How to use those PCBA FAQ? Regarding […]
Simply introduce of 4MCPCB.com 4MCPCB.com is Shenzhen, China based manufacturer. We are specializing in prototype, mass production PCB assembly service. Why 4MCPCB.com provide PCBA service More and more customer asks for PCBA quote. And we have some PCBA component suppliers. In other words, the PCBA market has increased faster than before. To provide a really […]
PCB fabrication and PCBA service PCBA service is very close related to the PCB fabrication service. Not only PCBA use bare PCB board, but it’s quality depend on PCB board’s. To ensure PCBA quality and turn time, currently 4MCPCB do not use other’s PCB to assembly at our facilities. Why 4MCPCB do not accept board […]
The minimum request file and document for PCBA As a professional PCBA service from China, we know most purchasers don’t know much about the file and document for PCBA. So this paper will focus on some basic file named or document required in place PCBA order. If you are a PCBA engineer, and have more […]
The definition of Centroid Centroid is a kind of special file. This file can use for PCBA quickly programming through the SMT machine. So, simply say Centroid is the file format of the PCBA. Centroid, also known as aka Insertion, Pick-N-Place, or XY Data. How to generate the Centroid of PCBA? This is a really […]