Electronics Forum: discoloration and terminal and solder (Page 1 of 3)

Palladium finish and solder balls

Electronics Forum | Thu Jun 27 21:28:42 EDT 2002 | davef

You're correct that the Ni/Pd termination seems to have something to do with you solder balling. It could be related to the interaction between your paste and the Pd. I assume these are really 'fines' rather than 'balls'. Things that come to mind a

No solder and solder bridge after Wave solder machine

Electronics Forum | Thu Nov 17 21:46:48 EST 2005 | C. Kolokoy

With DIP type components, a sub-par fluxing method (foaming a no-clean), and a chip wave where one is not needed are formulas for bridging and insufficient wetting. If you have SMD's on the wave solder side of the board greater than 0603, and no SOT

"Gap" in completed solder joint between lead and pad

Electronics Forum | Wed Nov 29 11:46:57 EST 2006 | slthomas

IPC 610 *C* states that the solder thickness requirement is a properly wetted termination is evident. Fillet height is another aspect and is usually specific to the package but is some function of solder thickness plus a percentage of lead height. D

LGA and Solderballs

Electronics Forum | Tue Nov 28 21:16:17 EST 2006 | davef

J Rose at EMPF says: The introduction of no-clean solder fluxes in electronics manufacturing has given rise to greater levels of solder balling simply because the opportunity to remove them in the wash process does not exist. They are typically cause

Lead-free and Leaded solder in the same reflow

Electronics Forum | Wed Feb 01 03:38:56 EST 2006 | Jose Luis

Hi all, I'm working in Military Production and then, We have an exception about RoHS (LEAD FREE), but, because we use "normal" components, in this moments, a lot of components have LEAD FREE terminations, and we think that after of 1st July, we wo'nt

Spacing and Yield

Electronics Forum | Tue Sep 18 11:34:36 EDT 2001 | jschake

The tightest spacing between neighboring 0201 components assembled was 8-mils. Please refer to the response for the query entitled �Minimizing Tombstoning Defects� posted by martys, as the response provided there is also relevant to address this que

Lead-free and Leaded solder in the same reflow

Electronics Forum | Tue Jan 31 14:23:39 EST 2006 | samir

Chunks, For our lead-free eval, we had the same problem with "charred looking" solder paste up the component termination of one of the smaller discretes, coupled with excessive solder balling...this smaller part did see peak temps in the 240 range -

Solder Splash/Balls and Flux Splash/Balls

Electronics Forum | Fri Jan 15 07:23:14 EST 2021 | denism

Also, solder splashes can be due to contamination, for example, on the terminals of components. In the past, had a problem with solder splashes on a seemingly standard SMD component. The reason was the incorrect nickel plating process of the componen

PB-Free HASL and Leaded Solder

Electronics Forum | Thu May 13 20:40:25 EDT 2021 | winston_one

Yes, we can't use pure Pb PROCESS. And as I say we will not use it anyway, as we have lead-free BGA's, LGAs, component with Solder Charged Terminations... It's became almost normal practice to solder it with leaded solder pastes. In this case peak re

J-STD-002 and -003 solderability testing...

Electronics Forum | Fri Jun 29 14:15:00 EDT 2001 | stefo

This is a question about complying with J-STD-001 solderability testing. Do any of you have your vendors certify that the components and PCB's that you buy from them comply with the solderabilty requirements spelled out in the -002 and -003, in lieu

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