Electronics Forum | Fri Apr 11 13:59:06 EDT 2003 | MA/NY DDave
Hi Wow, Quite elaborate. My Mechancial Engineering, Thermo friends would be proud of you. I am not kidding. The only problem I have with your technique is that quite often internal lands and structures steal the heat during soldering. By your techn
Electronics Forum | Wed Apr 30 08:00:33 EDT 2003 | pjc
Jason, In Transmission AXI the entire solder joint volume is imaged, not just a slice (no missing information) as with Cross-Section. Also, there is no signal loss from mechanical or digital image reconstruction (highest contrast and edge strength).
Electronics Forum | Tue May 25 10:16:03 EDT 2004 | Bimal Patel
We are doing assemblies using Immersion Silver coating for RF assembly for a while now. We did not have problem using 63/37 SN/PB solder paste untill recently. We started seeing black marks on the finish and around the solder joint recently. We have
Electronics Forum | Tue May 25 10:16:07 EDT 2004 | Bimal Patel
We are doing assemblies using Immersion Silver coating for RF assembly for a while now. We did not have problem using 63/37 SN/PB solder paste untill recently. We started seeing black marks on the finish and around the solder joint recently. We have
Electronics Forum | Tue Aug 03 16:52:41 EDT 2004 | Dreamsniper
Hi, What contributes to the above? I've got some BGA solder joints with a crystal like flux attached to it like a mini solder ball but do not have a perfect round shape. I had my aqueous cleaner's DI water sent for analysis and everything looks okay
Electronics Forum | Thu Mar 31 17:27:36 EST 2005 | russ
Are we possibly talking palladium instead of platinum? I haven't yet heard of platinum terminations (seems expensive) If it is palladium over nickel, I can tell you that you need to reach 225-230 Deg. C in reflow and the TAL should be about 90 sec.
Electronics Forum | Wed May 11 19:34:42 EDT 2005 | Tom B
You may want to check out Nihon Superior. Nihon licensed their Alloy to Aim for US production Late last month! The alloy uses nickel and the solder joints look amazing for "lead-free" they rival tin-lead in appearance. Other boasts is that you can
Electronics Forum | Sat May 28 04:56:23 EDT 2005 | WDLau
Dear, I am looking for the supports, specification, etc of the solderiability of Hot bar Reflow process with: A). FPC plating with sb/pb= 90/10, to be mounted to B) B). Golden plating PCB Please kindly input, As far as I know the melting point of
Electronics Forum | Mon Jun 20 21:54:38 EDT 2005 | darby
Contact your paste supplier and see what they say. My information on SAC 305 FROM MY SUPPLIER was - "The cool down rate is not as critical for Pb-free solder joints, as it was for SnPb. The grain sizes do not differ is size in the Pb-free bulk solde
Electronics Forum | Wed Jun 29 17:38:16 EDT 2005 | GS
Several years ago, we had almost same pbm, best results have been obtained by using water soluble paste (those time the old AM1208). Any way, to get a good toe meniscus is not so easy. Talking about CTE, keep in consideration the internal die of TSO
