Electronics Forum: solder balls (Page 12 of 216)

Re: How are your solder balls @ wave solder ?

Electronics Forum | Mon Oct 11 13:08:29 EDT 1999 | Dave F

| Folk's, | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | I was wanting to do a straw poll on you guy's as to the type of resist's you are us

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Wed Oct 04 16:18:06 EDT 2006 | cw

My Peak ~ 228-230C (customer wants to see this temperature). solder ball size - 20mil diameter Please advise ASAP. Thanks a lot!!!

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Wed Oct 04 13:58:38 EDT 2006 | cw

hi Dave.F and All, I need to reflow SCA solder balls on Sn/Pb paste, i get a pretty OK solder wetting and collapse apperance, however, i am seeing voids everywhere, some of them is greater than 25-30%, which has exceeded IPC standard. Please advise.

MLC reflow using high temp Sn10Pb90 solder balls

Electronics Forum | Thu Nov 08 10:52:22 EST 2012 | Bryan Ng

I am considering using high-temp ball Sn10Pb90 + eutectic solder paste for MLC reflow (no underfill). You can see that there is no Intermetallic bond for the paste and the balls. Under high stress/shock condition, the solder joints develop micro c

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Wed Oct 04 16:21:59 EDT 2006 | cw

Any recommendation?

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Wed Oct 04 16:45:04 EDT 2006 | cw

Thanks Russ!!! So, you have NO VIODS at all?

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Thu Oct 05 16:13:35 EDT 2006 | cw

Thanks All!!

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Thu Oct 26 12:25:46 EDT 2006 | cw

Thanks!!!

SAC solder balls reflow with Sn/Pb paste - Voids Issue

Electronics Forum | Wed Oct 04 14:48:49 EDT 2006 | cw

My soak at 150C - 180C for approx. 85sec to 100sec. I believe this is sufficient. I can't change my paste because customer wants to use SnPb paste with SAC solder balls. They claimed that they have sucessful result with other CM. I need to know if

MLC reflow using high temp Sn10Pb90 solder balls

Electronics Forum | Mon Nov 12 15:21:09 EST 2012 | davef

High-temp ball Sn10Pb90 + eutectic solder paste is common place for MLC reflow. Temperatures necessary to alloy the high-temp ball Sn10Pb90 and eutectic solder would be high enough to compromise interposer, board and many components. What are your:


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