Electronics Forum: pcb and size (Page 1 of 137)

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

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 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

Error in pcb size in juki

Electronics Forum | Thu May 08 12:05:25 EDT 2025 | mrprice

If anyone knows the correct number, please guide me. The pcb size and number of circuits are 7*3 and are shown in the picture.

Error in pcb size in juki

Electronics Forum | Thu May 08 11:53:30 EDT 2025 | mrprice

Hi Error is : Circuit protrudes from circuit board

Desiccants and pcb finish degradation?

Electronics Forum | Mon May 21 17:32:23 EDT 2001 | davef

I said: "Our electronic circuit board fabricators seal the boards in moisture barrier bags [MBB]. We discontinued the use of desiccant bags in these MBB because of concerns about the desiccant releasing materials that would affect the solderability

Error in pcb size in juki

Electronics Forum | Tue May 13 12:35:08 EDT 2025 | wippsen

I don't know the machines, but from the graphic and the error message I would say there are placement positions defined outside of the PCB. I have marked it in yellow in the appendix

glue size

Electronics Forum | Wed Dec 27 23:04:10 EST 2006 | i want to learn from u

Most of pcb have white/black printing at bottom side of them to indicate the chip location. Normally, this printing are the same location to the place that glue will be mount. My problem are the glue size between the point that have printing and not

pcb purchasing and pcb assembly

Electronics Forum | Thu Mar 19 12:26:10 EDT 2020 | yuaanliie

You have mostly set in your mind before purchasing PCB i.e. PCB is an acronym for the printed circuit board. Last month I purchased PCB from Great PCB.

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