Electronics Forum: soldering alloy (Page 10 of 97)

Leadfree dip soldering

Electronics Forum | Mon May 09 01:30:40 EDT 2005 | Hannu

Hi Pat, And thanks for the sympathy :) This thing with ultrasonic transducer, is it something tried and trusted or is this a new idea for improving the wetting behaviour of leadfree alloys? This is completely new to me, can you please elaborate on

platinum clad nickel soldering

Electronics Forum | Thu Mar 31 19:52:50 EST 2005 | davef

We agree with Russ that you're talking palladium instead of platinum. Your wetting problem likely is not the Pd-Ag surface layers, but the underlying metal or nickel to which you need to wet. Either a base metal is: * Contaminated and poorly wettabl

Blowholes during wave soldering

Electronics Forum | Thu Sep 27 10:40:46 EDT 2007 | rgduval

Joris, Yep, very common to have those small blow holes in lead-free alloys. We used to get them very consistently on white-tin finished boards, and less frequently with gold finished boards, for what ever that is worth. IPC-610 actually allows t

SAC305 soldering to 58Bi/42Sn

Electronics Forum | Tue Nov 24 11:44:12 EST 2009 | mikesewell

I think you're okay reworking with SAC305 but rework with SnPb will result in a SnPbBi alloy with a lowered melting point that may pose reliability concerns. As far as suitability of 58Bi42Sn goes - depends on your requirements.

Solderbridges wave soldering

Electronics Forum | Mon Dec 04 21:42:12 EST 2006 | KEN

Keep in mind that device pitch, pad geometry, lead length and even alloy type will play a roll in your evaluation. I have an assembly that we run 10k pieces per month. One two-pin connector has a pitch of 1.27mm. Unfortunately, the pads are 0.007"

SAC305 soldering to 58Bi/42Sn

Electronics Forum | Tue Nov 24 10:03:45 EST 2009 | andrzej

Actully none couse we glue them. Please see attached file - there are red dots marking glue placment. I understand you want to check if there is any sense in gluing components. I`ll ask one more time - Is anoyne who reworked SMDs with SAC305 where

Blowholes during wave soldering

Electronics Forum | Thu Sep 27 10:53:59 EDT 2007 | gregoryyork

Joris, > > Yep, very common to have those small > blow holes in lead-free alloys. We used to get > them very consistently on white-tin finished > boards, and less frequently with gold finished > boards, for what ever that is worth. > > IPC-6

QFP soldering issue

Electronics Forum | Wed Jan 14 10:07:38 EST 2004 | Patrick

More on QFP soldering issue as per Paul f original e-mail. 1. Problems occured on different PCB's, on different lines using different equipment 2. Flux residue is common in the dimple on the solder. 3. The fault occurred using both "Kester 265" & "Al

soldering to thick gold plating

Electronics Forum | Tue Jul 11 20:13:05 EDT 2006 | davef

We agree with Chunks. You need to turn-up the heat [slow the conveyor] because you have significantly changed the melting point of the solder alloy by adding so much gold. Relative to ENIG you should expect: * Similarly smooth surface, possibly a l

Re: Lead-free soldering training.

Electronics Forum | Tue Nov 28 12:00:33 EST 2000 | rabell

Deon, my first response is YES - big time. You are correct that there are some massive issues here. For one thing, lead free solders are only one solution, as conductive epoxy has also been put forward. This was demonstrated on the TAC line at Ne


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