Electronics Forum: copper and flex and circuits (Page 1 of 2)

Fine pitch and thick copper

Electronics Forum | Wed Dec 08 04:19:16 EST 1999 | pascal MATHIEU

I am working in electronic automotive industry and today we are facing to a very serious problem : if we want to use a PCBoard with a copper thickness of 90�m + fine pitch circuit (0.65mm, 0.5mm) the supplier(several) of the PCB has some trouble t

Conductive Adhesives and Underfill used on flex ckt

Electronics Forum | Mon Jan 11 20:26:54 EST 1999 | Chris G.

I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chips

Re: Conductive Adhesives and Underfill used on flex ckt

Electronics Forum | Tue Jan 12 15:04:40 EST 1999 | Earl Moon

| I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chi

Re: Conductive Adhesives and Underfill used on flex ckt

Electronics Forum | Tue Jan 12 15:02:12 EST 1999 | Earl Moon

| I have used conductive adhesives for some time now on thickfilm. Does anyone know of a really good conductive adhesive to attach flip chips to flex circuits? I would like to stencil print the adhesive to the substrate and then place the flips chi

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

JUKI KE2060R and KE2060L

Electronics Forum | Mon Sep 21 04:23:16 EDT 2009 | smtbox

R series Features FCS (Flex Calibration System) highly regarded easy maintenance just got even easier! The optional FCS calibration jig is a simple to use system to re-calibrate placement accuracy. The machine automatically picks and places jig comp

Flexi boards and uBGA

Electronics Forum | Thu Jul 06 13:36:37 EDT 2006 | SWAG

We've had much trouble with flex circuits. As previously mentioned, you must have local fids for the board or the BGA itself (if panelized). Other troubles we experience are drilled holes for pinned connectors. Unless the PCB manufactur has some w

paste Sn42/Bi58 and Lead Finish

Electronics Forum | Sat Nov 03 10:57:27 EDT 2012 | davef

EricR: Regarding "*** By the way, since we have used the Tin-Silver-Copper lead free solder there has been a strange liquid type chemical leek from the oven exhausted pipes." ... I don't know anything about your process, but the first thing I'd inve

Re: Green coating and through-hole plating

Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F

| Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a

Re: Green coating and through-hole plating

Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon

| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw

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