24968 used results

Electronics Forum: used (Page 661 of 2497)

Re: Where can I purchase a PCB with a bare copper grid for solder flux evaluations.

Electronics Forum | Mon Aug 30 16:10:10 EDT 1999 | Dave F

| I have looked through the IPC web page and surfed to frustration. Can somebody give me a lead? | Brian: We don't use an etched board. We use a special stencil, described below and print on bare copper laminate. 3 Solder Wetting Test. Recogniz

Thermabond

Electronics Forum | Thu Aug 26 07:38:07 EDT 1999 | Robert Meston

Has anyone any experience in using Arlon thermabond as a prepreg between polyimide substrates and alluminium heatsinks, Does it really make any difference to the CTE etc ?

Re: screening adhesives

Electronics Forum | Sat Aug 28 14:23:52 EDT 1999 | JohnW

| Hi There, | | Could anyone please give me some pointers on screen printing non-conductive adhesives or where I could find the information avaliable. Aspects such as printing parameters, ideal stencil design and a general overview. Do already have

Electrum bar solder

Electronics Forum | Wed Aug 25 14:40:24 EDT 1999 | hammer

Has anyone used bar solder from a company called "Electrum Inc." What kind of results did you have?

Tombstoning of chip capacitors

Electronics Forum | Tue Aug 24 11:29:59 EDT 1999 | Gary Kemp

Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? Any help would be appreciated. Thanks.

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 09:53:40 EDT 1999 | lwk

| | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | Most common reason is uneven heating where

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 15:47:25 EDT 1999 | JohnW

| | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | Most common reason is uneven hea

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 16:42:32 EDT 1999 | Dave

| | | | | | Could use a little help here. Can anyone clarify to me the cause and fix of chip caps/resistors tombstoning following reflow? | | | | | | | | | | | | Any help would be appreciated. Thanks. | | | | | | | | | | | Most common reason is

Re: Tombstoning of chip capacitors

Electronics Forum | Wed Aug 25 21:44:03 EDT 1999 | Jason Tomlinson

Re: No-clean stencil apertures

Electronics Forum | Wed Aug 25 17:09:53 EDT 1999 | Earl Moon

| | Does anyone have any information on stencil aperture/pad ratios for noclean solder paste. In the past I have experienced severe solder ball problems when using the same size apertures from aqueous products as I do with the No-clean products. Co

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