Electronics Forum | Sun Jul 04 19:32:16 EDT 2004 | indy
What is the most popular PCB finish for lead-free soldering ? We are using ENIG and trying out Paladium-Silver. Are tin whiskers an issue for anyone ? tin whiskering becomes a big issue if you have any military company as your client. They still p
Electronics Forum | Mon Aug 16 11:49:44 EDT 2004 | Kris
Hi Guys thanks for the replies. Dave, the spec is not for enig but for hard gold does your response alter if thats the case /
Electronics Forum | Mon Aug 16 16:26:19 EDT 2004 | Kris
what about areas that are soldered ? This is def not a Enig process and the specs are as they are not sure why thanks a lot for your help
Electronics Forum | Tue Oct 26 08:41:56 EDT 2004 | Bob R.
When we first got into BGAs on ENIG we were getting joint cracking at in-circuit test. The joints were breaking in the Sn-Ni intermetallic. We did a lot of pull testing while working with our board suppliers and our conclusion was that pull testing
Electronics Forum | Wed Mar 16 15:52:41 EST 2005 | cyber_wolf
Are you using a standard convection reflow oven ? This does not make any sense. I have never heard of anything like this. If you are using a standard oven, then I would say that it is time to get your profiler calibrated.
Electronics Forum | Thu Mar 17 12:51:39 EST 2005 | Slow Ride
How much more? A couple degrees? That would be normal from one board to another, depending if the t-coupls are in the exact same spot etc. What type oven? IR ovens can be affected by colors.
Electronics Forum | Thu Mar 24 15:29:46 EST 2005 | Claude_Couture
other than the fact that silver is a better conductor of heat, I can't think of anything.
Electronics Forum | Mon Apr 04 22:07:15 EDT 2005 | Dhanish
Questions and answers - what Column pitch do your CCGA have ? a) 1,27 mm?b) 1.00 mm? 1.27mm - how are the PCB pad finisched ? OSP Enig? HAL? OSP - Are you using Clean or NC solder paste? Clean
Electronics Forum | Wed Jun 29 16:25:51 EDT 2005 | mattkehoe
When discussing this with the customer he said that his vendor recommended a hard gold plating finish on the board due to the BGA. I said "hard gold"??? And he said yes, hard gold. Turns out the boards were plated with hard gold, not ENIG. Thank
Electronics Forum | Wed Jun 29 17:18:41 EDT 2005 | GS*
Very interesting tread, many thanks to all. Matt please, now what does it mean for you? Will your custmer accept dull solder joints or will the plating be changed ? (ie. HASL, ENIG, etc) Tnks and regards GS*
