Electronics Forum: masdi (Page 1 of 2)

Re: Solder Beading under Cap...Need help

Electronics Forum | Mon Feb 14 12:05:24 EST 2000 | Dave F

Masdi: Are you sure you have your washer set-up correctly? We never have problems with solder balls. Ta. Dave F

Solder ball bridging under BGA

Electronics Forum | Wed Sep 02 06:50:55 EDT 1998 | Masdi Muhammad

Hi, We are having problem with yield loss due to electrical fail. Further investigation shows that the failure is due to solder bridging under BGA. Has been there any study or experience on how this could occur and what we can do to prevent it. Than

Re: Solder on gold finger

Electronics Forum | Sun Jul 26 22:35:55 EDT 1998 | D.Lange

Masdi, Try board shunts. They are hi-temp rubber strips with grooves cut. They can be popped on and off with ease and are much faster than taping and considerably cheaper. They also work great for masking goldfingers prior to wave soldering. Contac

Re: Solder Beading under Cap...Need help

Electronics Forum | Fri Feb 11 08:51:45 EST 2000 | HMAL

Dear Masdi, Perhaps you should check again your screen print process. Small amounts of solder paste under stencil can cause your problems. This paste is from previous printed pcb. When printing next pcb this paste attachs to places that it doesn't

Solder Beading under Cap...Need help

Electronics Forum | Fri Feb 11 08:24:51 EST 2000 | Masdi

Hi, Need help. We are starting to see a lot of small solder under capacitors and some of them can be bigger than 10 mils. For current action, we have checked through screen print process and component placement but still don't have any clue on how

Solder on gold finger

Electronics Forum | Sun Jul 26 20:56:43 EDT 1998 | Masdi Muhammad

We are trying to reduce the number of units fail at system test due to flux on gold finger. We know so far that the flux is deposited onto the goldfinger during touch-up or rework and to reduce the contamination we are planning to implement 'tapin

Tape and shunts are good ideas for WS *BUT*...

Electronics Forum | Tue Jul 28 07:02:59 EDT 1998 | smd

Right now we are taping the goldfingers which is effective but also expensive. Also, some tape was leaving yellow marks on the goldfingers. We're trying the so-called goldfinger glove from Steven's Products. It's a very small company (probably one gu

Re: Tape and shunts are good ideas for WS *BUT*...

Electronics Forum | Mon Aug 03 08:29:24 EDT 1998 | Dave F

SMD: Sounds interesting. What is the contact information on Steve? Dave F | Right now we are taping the goldfingers which is | effective but also expensive. Also, some tape was leaving yellow marks on the goldfingers. We're trying the so-called go

Darn-left out contact info on the goldinger gloves

Electronics Forum | Mon Aug 03 08:23:37 EDT 1998 | smd

Stevens Products (supposedly around since 1937) 128 N. Park St. E. Orange, NJ 07019 Tel 973-672-2140 Contact: Ross Stevens, Jr. They'll take a PO but terms are net 30 Right now we are taping the goldfingers which is | effective but also expensive. A

Re: Solder on gold finger

Electronics Forum | Tue Aug 18 12:02:59 EDT 1998 | zambri

| Hi, | Need some advice on how to eliminate or reduce the solder on finger that we are having right now. So far what we understand is that 90% of the problem is due to the reflow process where solder traps in vias causing explosion when subj

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