Electronics Forum: exposed copper on test pad (Page 1 of 4)

Print solder paste on test pad on OSP board

Electronics Forum | Sun Sep 12 08:30:29 EDT 2004 | davef

Well, another alternative is to use a water washable flux. If you insist on staying with a NC flux, use one that is probable. We prefer to probe solder, rather than copper.

Info on OSP PCB�s

Electronics Forum | Tue Jun 05 21:14:10 EDT 2001 | davef

You aren't going to post our stuff on your "Hey, I'm the wizard site", are you? Board fab, Pad coatings, OSP 1 OSPs: Imidazole (Via Systems) is good. Entek (Enthone) works, but requires strict thickness control in fab. 2 Enthone CU56 allows one t

Re: Tin-Lead thickness on PWB's

Electronics Forum | Thu May 21 09:54:07 EDT 1998 | Justin Medernach

I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered and solde

Re: Bridge on BGA

Electronics Forum | Fri Aug 20 12:41:20 EDT 1999 | stefano bolleri

Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. This is what I did. Created a removal pr

Re: Bridge on BGA

Electronics Forum | Fri Aug 20 14:51:47 EDT 1999 | Tony

Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. This is what I did. Created a

Re: Bridge on BGA

Electronics Forum | Fri Aug 20 14:51:55 EDT 1999 | Tony

Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. This is what I did. Created a

Re: Bridge on BGA

Electronics Forum | Fri Aug 20 17:17:14 EDT 1999 | K.T

Yesterday as I was creating a profile on a plastic BGA using Conceptronics freedom 2000 rework station, I happend to discover that I was able to remove solder bridging from a plastic BGA. This is what I did.

Solder Spotting on Gold

Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis

This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder

Re: Tin-Lead thickness on PWB's/Let's Hear More

Electronics Forum | Tue May 26 20:18:09 EDT 1998 | Justin Medernach

I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered and

Re: Tin-Lead thickness on PWB's/Let's Hear More

Electronics Forum | Tue May 26 14:50:07 EDT 1998 | Dave F

I'm reviewing my board fab spec. It calls for a minimum SnPb thickness of 50 microinches on HASL PWB's. I've looked at other specs that call out anything from 30 to 80 microinches, and others that just say the copper pad must be covered and sol

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