Electronics Forum | Thu Nov 14 10:18:31 EST 2019 | slthomas
It doesn't look to me like the jumper wire is wetting at all. I would immediately question the solderability - do you know how that jumper wire is finished (plating type)? Also, how experienced are the solderers? It could be that the wire never get
Electronics Forum | Thu Sep 10 15:06:11 EDT 2009 | dyoungquist
My guess is that he is talking about the gold plated pads not fully wetting with solder. We have seen this on some of our ENIG boards with the gold still showing at the far corners of the rectangular pads. Not knowing if this is hand soldering or p
Electronics Forum | Fri Jun 14 14:30:36 EDT 2002 | davef
Assuming you are talking about solderable surfaces: People specify various materials to protect the solderability of the pads on the board. Gold, actually, Electroless Nickel - Immersion Gold [ENIG], is popular. * Board fabricators like it because
Electronics Forum | Tue Dec 15 10:16:55 EST 2015 | mbb
I had a problem with PCB pads: soldering process couldn't be performed because soldering pads of component in the PCB are oxydized. Is there any solutions to eliminate the corrosion on the pads in order to avoid there scrap because we 're talking abo
Electronics Forum | Wed Nov 07 18:37:27 EST 2001 | steven
sometime hand solder can cause also. no necessary have to be paste n reflow.:) now i'm facing bridging on 0402 components pads. any suggestions on spacing distance as we're going to re-design the pcb.
Electronics Forum | Mon Jan 04 22:09:57 EST 2016 | a290668789
It's amazing. I rarely saw that ENIG finish could be corroded. It should be the Nickel corroded issue and then affected the solderability. Not clear how to clear this, if you get the answer, let me know. good luck
Electronics Forum | Tue Dec 15 15:21:17 EST 2015 | davef
Peculiar that ENIG boards are corroded, not that it can't happen. * J-STD-002, Solderability Tests for Component Leads, Terminations, Lugs, Terminals and Wires * J-STD-003, Solderability Tests for Printed Boards The first person I'd talk with is my
Electronics Forum | Mon Aug 28 17:54:59 EDT 2000 | Steve Thomas
We're trying out 0603 packages on some 0805 footprints (at this stage only on some test boards) since our vendor tells us the 0805's are going to be getting harder to get, and more expensive to pay for. I understand the IPC footprint for the two is
Electronics Forum | Mon Apr 01 20:10:24 EST 2002 | davef
Oh. [Howabout if I smack you?] If ahma connectin� wif whut yer sayin�, you: * Don�t like the appearance of the glue slobberin� out from under the component even though there is no apparent glue on solderable surfaces. * Concerned about the hydrosco
Electronics Forum | Tue Oct 17 12:07:58 EDT 2006 | pms
ya don't need no stinkin pads. just run sum fine gauge insulated jumpah wires from da I.C. legs (da ones with da missin pads) to da traces or where-ever dem traces end up. dat should get er dun !!!!
Products, services, training & consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep, Distributor & Service Provider for Seamark/Zhuomao and Shuttle Star BGA Rework Stations.
Training Provider / Manufacturer's Representative / Equipment Dealer / Broker / Auctions / Consultant / Service Provider
1750 Mitchell Ave.
Oroville, CA USA
Phone: (888) 406-2830
.gif)
.gif)
