PCb inspection in China pcb factory is done piece by piece. There are many girls siting there the whole day to check every piece. The rejected one will be repaired…
PCB inspection process
August 29th, 2013 | Posted by in PCB production process - (Comments Off on PCB inspection process)PCB CNC slot and outline process
August 29th, 2013 | Posted by in Holes and profile | PCB production process - (Comments Off on PCB CNC slot and outline process)PCB e-test process
August 28th, 2013 | Posted by in PCB production process - (Comments Off on PCB e-test process)We have two ways of testing PCB. For small batch, it is tested by probe flying. For mass production,we will open an e-test fixture to test it. once second one piece, it is very fast. You can see how it runs from the video. Prototype Orders: Flying-Probe E-Test is always very fast and economical for …
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This is the AOI testing room. AOI equipment is very expensive. Small factories don’t have it. Many china pcb factories only have one set. So usually if you want to know whether this china pcb manufacturer is big , ask them how many AOI machine they have.
pcb soldermask printing
August 27th, 2013 | Posted by in PCB production process - (Comments Off on pcb soldermask printing)Do you know how PCB solder mask is printed in China PCB factory? This video will show you the pcb soldermask process done in the pcb workshop.
There are many times of washing in PCB production. This is auto washing line.There is board sensor on the line, once the pcb is coming, it start to spray water. You have to be careful if your circuit board is very thin eg.0.2mm, you cannot allow factory to use this kind of washing line. You …
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PCB copper plating process
August 26th, 2013 | Posted by in PCB production process - (Comments Off on PCB copper plating process)PCB plating process is very fast in pcb production. So most of time, this line is free comparing with other processes. But it is not easy to operate.The parameters such as time, power have to be adjusted for different pcb part numbers. Factory will plate one piece sample first to check quality,then they plate rest …
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EQ example: pcb outline shape conflict
August 26th, 2013 | Posted by in Engineering questions example - (Comments Off on EQ example: pcb outline shape conflict)pcb outline shape conflict See above pointed, pls advise we fabric the pcb according to right angle or roundcorner?
EQ example:solder mask bridges
August 26th, 2013 | Posted by in Engineering questions example - (Comments Off on EQ example:solder mask bridges)Some distance are less than 7mil between IC pin pads as pic6-1, solder mask bridge cannot be printed between these IC pins pads because it is too narrow. For the distance area which is less than 7mil on this circuit board, we suggest A. Print solder mask bridges ,but the solder mask will cover the …
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EQ example: PCB Solder mask at BGA area
August 26th, 2013 | Posted by in Engineering questions example - (Comments Off on EQ example: PCB Solder mask at BGA area)How to print circuits boards PCB soldermask at BGA area? Pic 7, some blue vias framed at pcb BGA area are with solder mask covered at top layer, but solder mask opening at bottom layer. After solder mask filling, the vias won't be 100% closed (we name it solder mask half filling.) Pls choose, A：Make same as …
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