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Caring circuit - China printed circuit board/PCB Prototype and Medium specialist Cut your time and Save your Cost -Super Quality PCB 1- 16 Layer Caring Circuit specializes in the supply of prototype, small and medium-series PCBs from ISO9001:2008 approved factories in Shenzhen,China.We are a leading provider of custom Single layer,double layer,multilayer rigid PCB,metal and flexible PCB. We have an integrated international business model that delivers to our customers a wide range of PCB technologies fast, reliably and at low cost.

PCB drilling process

August 25th, 2013 | Posted by admin in PCB production process - (Comments Off on PCB drilling process)

PCB CCL cutting process

August 25th, 2013 | Posted by admin in PCB production process - (1 Comments)

PCB cutting material process is the first step of pcb production. You could call to stop anytime before it. But the status of PCB is on cutting material, it is too late for you to call stop.Because 70% cost is the material cost.But you still could change the inner layer,drilling and so on.

Pcb lamination process

August 25th, 2013 | Posted by admin in PCB production process - (1 Comments)

Many China PCB factories don’t have the lamination equipment. Usually,they will send pcbs inner layer finished to other big factory or the lamanation factory to complete this process.It seems it is not what you like. But it is common,and you don’t need to worry about quality,because these lamination factories is very professional,they even could make …
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Q 8. pic12,we could see these 6 drilled holes with 0.3mm size are not in the center of copper pads. It is abnormal pcb drill location. We suggest to move these 6 holes to the center of the pads as pic 13, is it ok?     pic 12     pic 13

EQ example: pcb PTH problem

August 24th, 2013 | Posted by admin in Engineering questions example - (1 Comments)

    Pls see above area circled,  it seems some problems with these pcb PTHs coz they don’t connect with circuit board copper in Layer 2, maybe there are some mistakes while your designer export the Gerber files. Pls provide new data.

EQ example:abnormal circuit board solder mask opening

August 22nd, 2013 | Posted by admin in Engineering questions example - (Comments Off on EQ example:abnormal circuit board solder mask opening)

Pic4,the MARKs solder mask opening are abnormal ,pls choose, A:Make same with gerber, the cooper around masks will be exposed. B:  Change Gerber copper as pic 5 to make sure the cooper around masks will be exposed . pic4 pic5 Customer Reply :                       

EQ example:outline

August 21st, 2013 | Posted by admin in Engineering questions example - (1 Comments)

Some pads are out of PCB profile/outline, after routing, the copper will be expose as Pic1.  So pls choose, A.     Copper expose is no problem B.     We will shave the blue pads copper as pic 2 to make sure the distance between outline and pads is 0.2mm. Then copper won’t expose after routing.      pic1 …
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Countersinks and Counterbores

August 21st, 2013 | Posted by admin in News - (1 Comments)

Many people are perplexed by countersink holes (often called sink hole or countersunk hole) on PCB boards. Indeed these terms deserve a good explanation. I  want to thank Mr.Li from our fabrication department.  He took me to school (maybe a little old school even) on countersinks and counterbores. Countersink A countersink hole is simply a …
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