Full Site - : tin-lead bga (Page 13 of 20)

Re: BGA Pad Dressing After Removal Method

Electronics Forum | Thu Jun 04 12:05:43 EDT 1998 | Anthony

Dear Dave, I have a "possible" solution to your problem, though I have never tried it myself. If you're trying to come up with a non-abrasive technique for removing solder-keep reading. If it's a faster method you desire, do yourself a favor and hi

Re: Gold boards OK with SMT? What About Gold Thickness? - Clarification

Electronics Forum | Wed Aug 12 07:22:52 EDT 1998 | Earl Moon

| | | | | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated,

Re: BGA PAd Soldermask

Electronics Forum | Wed Feb 16 21:51:29 EST 2000 | Dave F

Kurt: Lots of choices, not many of them good, yano. 1 So LPI has taken over the market pretty nearly 100%, but it won't "tent" reliably, because it is not very viscous when applied and drops into the hole. So then, tenting/plugging with LPI is bad

Re: BGA PAd Soldermask

Electronics Forum | Wed Feb 16 21:51:29 EST 2000 | Dave F

Kurt: Lots of choices, not many of them good, yano. 1 So LPI has taken over the market pretty nearly 100%, but it won't "tent" reliably, because it is not very viscous when applied and drops into the hole. So then, tenting/plugging with LPI is bad

QFP soldering issue

Electronics Forum | Thu Jan 08 16:16:09 EST 2004 | Dean

My first concern would be the choice of solder paste you have. There are better chemistries out there that far exceed the capabilities of the 609 2. Yes, the part will partially float on the solder (assuming plastic qfp). Cross sectioning would sho

Re: Gold boards OK with SMT? What About Gold Thickness?

Electronics Forum | Mon Aug 10 21:52:34 EDT 1998 | Dave F

| | | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, not

Re: Gold boards OK with SMT? What About Gold Thickness?

Electronics Forum | Tue Aug 11 07:51:57 EDT 1998 | Earl Moon

| | | | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, n

Re: BGA Repair Problems

Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis

| Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple

Re: IR Versus Hot Air - Put-Up Your Dukes

Electronics Forum | Thu Sep 23 23:58:01 EDT 1999 | Earl Moon

| | Jackie's posting recently and responses to it got me to dondering. First, recollecting, we bought an IR rework station a couple million years ago. It had a IR source on a stand, a bunch of lenses, and Reynolds aluminum foil for shielding near-b


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