Electronics Forum: soldering alloy (Page 5 of 97)

Differences between solder paste alloy SAC305 and SAC405.

Electronics Forum | Thu Sep 23 08:08:12 EDT 2021 | SN

Hi. Anyone in this forum experienced the lead-free solder paste SAC305 and SAC405? What are the differences to expect for solder paste with SAC305 and SAC405? What is the effect of silver (Ag) alloy in solder paste? It was really appreciated if could

solder paste alloy effect on high frequency board

Electronics Forum | Wed Oct 10 12:20:44 EDT 2007 | slthomas

Does it fail to function or does it function outside of acceptable tolerances? If the latter I wouldn't know what to think, but if the former I would feel obligated to suspect solder quality or maybe even a component problem with the elevated lead-

solder paste alloy effect on high frequency board

Electronics Forum | Thu Oct 11 14:44:46 EDT 2007 | bbarton

Lots of papers out there on HiFreq circuits and the effects of solder paste residue. Google Dr. Karen Tellefsen. Simple test...take a "failed" board, remove the residues, test again. Has the problem gone away?

Differences between solder paste alloy SAC305 and SAC405.

Electronics Forum | Fri Oct 01 02:46:47 EDT 2021 | sn

Thanks, Evtimov. In terms of mechanical drop performance, can we conclude that the higher Ag alloy will have poorer drop shock performance relatively compare to those with lower Ag? The Ag3Sn is a good IMC for welding strength?

solder paste alloy effect on high frequency board

Electronics Forum | Mon Nov 05 19:43:09 EST 2007 | davef

"Effects of surface finish on high frequency signal loss using various substrate materials" - Call Don Cullen at Mac Dermid or Larry Gatewood at Rockwell Collins for a copy.

Differences between solder paste alloy SAC305 and SAC405.

Electronics Forum | Thu Sep 23 12:49:25 EDT 2021 | davef

Several articles in a recent SMTnet Express Newsletter [https://smtnet.com/express/index.cfm?fuseaction=archives&issue=20210909] addressed topics of your question.

Differences between solder paste alloy SAC305 and SAC405.

Electronics Forum | Tue Oct 05 12:46:02 EDT 2021 | emeto

From what I understand SAC305 and SAC405 are considered low silver content and have the better overall mechanical qualities compared to more silver or no silver.

solder paste alloy effect on high frequency board

Electronics Forum | Wed Oct 10 12:04:54 EDT 2007 | russ

everything else EXACTLY the same? meaning exact same product number from the same manufacturer same fluxes used in the paste? no additional no clean "touchup" or hand soldering operations? No expert by any means but it would seem odd to me that the

solder paste alloy effect on high frequency board

Electronics Forum | Wed Oct 10 02:04:10 EDT 2007 | omidjuve

hi we use a no clean solder paste with the sn63pb37 alloy and our high frquency board doesn`t have any problem in test but after this product is finished now we use 2 different solder pastes 1. sn62 pb36 Ag.4 RA tape 2. NC type lead free with Ag i

solder paste alloy effect on high frequency board

Electronics Forum | Wed Oct 10 13:59:49 EDT 2007 | petep

I have always understood that on boards (or circuits) operating over 900 MHz, No Clean fluxes are to be avoided. Apparently the residues left behind, while non-conductive and non-corrosive, will change impedence of the circuit. It may be a possibil


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