Electronics Forum: copper thickness (Page 1 of 31)

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 14 12:10:05 EST 2005 | davef

Ceramic capacitors larger then EIA size 1812 are known to be very susceptible to thermal shock damage due to their large ceramic mass.

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 07 16:34:55 EST 2005 | CW

If I am putting chip capacitors on a .063 FR4 board, what size package should we stay away from to avoid cracking? If I use 2 mil copper on the outside layers of a PCB, am I limited to what pitch of parts I can use? Specifically, will using 0603

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 07 11:26:23 EST 2005 | CW

How large of chip capacitor can we use reliably? I��ve heard they tend to crack. I��ve also heard if you pre heat the larger chip caps (1812 and above) before vapor phase reflow, they won��t crack. If I use 2 mil copper for a power supply board, a

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 07 16:31:47 EST 2005 | CW

hi Bob, Thanks for the info. I understand your comments, but I am looking for specific guidance, If I am putting chip capacitors on a .063 FR4 board, what size package should we stay away from to avoid cracking? (I realize this is dependent on h

cap size and copper thickness vs part size questions

Electronics Forum | Mon Nov 07 12:25:32 EST 2005 | Rob

Hi CW, Larger chip caps can be susceptable to cracking, but mainly this is due to handling - flexing of boards is the main culprit (the part being mechanically joined at both ends to the board). PCB's usually flex easiest along one axis, and larger

cap size and copper thickness vs part size questions

Electronics Forum | Tue Nov 08 05:00:23 EST 2005 | rlackey

Hi CW, Regarding orientation, yes, your diagram is right - see the following link for confirmation. http://search.murata.co.jp/Ceramy/image/img/A18X/C2EB3C.PDF Regarding information on bending strength you want to talk to your local Murata office

Verifying requested copper weight

Electronics Forum | Tue Apr 24 10:08:40 EDT 2018 | sarason

Alibaba has plenty of them https://www.alibaba.com/showroom/thickness-measuring-instrument.html Just stick to the ultrasonic method to measure the copper thickness. sarason

Verifying requested copper weight

Electronics Forum | Tue Sep 11 04:39:14 EDT 2018 | cannizzaro

If you need to know the exact copper thickness of the board, you can ask the Fab to offer the microscopic report, I have already made a 2oz board in ALLPCB before and asked them offeed me this report,usually normal factories can offer it but need add

Soldermask thickness

Electronics Forum | Thu Oct 02 11:04:48 EDT 2003 | russ

Out of curiousity, Isn't soldermask only used as a solder processing aid and to cover the copper? Russ

Soldermask thickness

Electronics Forum | Fri Oct 03 07:49:18 EDT 2003 | mk

Mask Musings. Soldermask (SM) and its functions have changed and evolved over the years. As an ex-solder mask applicator, I can remember screening Colonial High Gloss Epoxy soldermask on boards back in the early 80's, ending up with a thickness that

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