Electronics Forum: white stuff around solder points (Page 1 of 8)

High-Temp solder for thermocouples

Electronics Forum | Thu Dec 17 10:04:28 EST 1998 | Chrys

Necessity is the mother of invention... The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. So I ran out to the local Radio Shack to see if the

Re: solder mask

Electronics Forum | Tue Aug 10 16:01:12 EDT 1999 | Earl Moon

| | | | | | I am having cleaning problems when processing PCB's which have | | | | | | TAIYO solder mask on them. After processing, hand soldering and | | | | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tid

Re: solder mask

Electronics Forum | Tue Aug 10 15:19:55 EDT 1999 | Earl Moon

| | | | I am having cleaning problems when processing PCB's which have | | | | TAIYO solder mask on them. After processing, hand soldering and | | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc.

Re: solder mask

Electronics Forum | Tue Aug 10 15:47:34 EDT 1999 | John Thorup

| | | | | I am having cleaning problems when processing PCB's which have | | | | | TAIYO solder mask on them. After processing, hand soldering and | | | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide mark

Re: solder mask

Electronics Forum | Tue Aug 10 07:28:49 EDT 1999 | Brian

| | | I am having cleaning problems when processing PCB's which have | | | TAIYO solder mask on them. After processing, hand soldering and | | | cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc. Other

Re: solder mask

Electronics Forum | Wed Aug 11 09:51:11 EDT 1999 | Brian

| | | Easy goods-in polymerisation check: clean, white, cotton cloth: wrap it round a suitably gloved finger and pour a few drops of methylene chloride (! toxic) onto the end of the finger and rub it onto the bare board for a minute or so. If it come

Re: High-Temp solder for thermocouples

Electronics Forum | Thu Dec 17 10:22:31 EST 1998 | Earl Moon

| Necessity is the mother of invention... | | The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. | | So I ran out to the local Radio Shack to

Solder balls on Cleaned process

Electronics Forum | Wed Oct 17 19:12:32 EDT 2001 | scott

Dave's right! Wash the boards RIGHT AFTER reflow, don't let that residue harden. Then you turn around and cure that stuff during the second reflow by not performing the first wash???? wow.... By the way, are you having any problems with white resi

Re: White Tin

Electronics Forum | Wed Apr 28 12:48:02 EDT 1999 | Justin Medernach

| | | We use Immersion Gold (AuNi) for our 20 mil pitch and BGA boards. | | | Lately, we have been having solderability problems with boards with this surface from some of our suppliers. | | | | | | We are considering trying boards with White Tin so

Re: White Tin

Electronics Forum | Fri Apr 30 03:49:25 EDT 1999 | Charles Stringer

| | | | We use Immersion Gold (AuNi) for our 20 mil pitch and BGA boards. | | | | Lately, we have been having solderability problems with boards with this surface from some of our suppliers. | | | | | | | | We are considering trying boards with Whit

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