Electronics Forum: de wetting (Page 1 of 8)

Black color solder wetting after reflow

Electronics Forum | Fri Apr 29 14:16:16 EDT 2011 | ppcbs

Below is the long explanation. This defect is most commonly found with BGA components, but can arrise with all components. I see it happening more now with lead free boards that are being assembled with a no clean flux. Best short term remedy is t

De-wetting

Electronics Forum | Mon Jul 28 05:35:17 EDT 2008 | surendra268

What could be the main reasons for De-wetting in reflow process. Can anybody answer

De-wetting on Immersion Silver finish board

Electronics Forum | Thu Aug 24 13:20:24 EDT 2000 | Murad Kurwa

One of our divisions is having this problem: - De-wetting on the smt pads and componenent termination on the bottom side after top side procssed through reflow. Board finish is immersion silver. ? Any recommendation on what we should check & verify

De-wetting

Electronics Forum | Mon Jul 28 05:48:17 EDT 2008 | mattkehoe

What could be the main reasons for De-wetting in > reflow process. Can anybody answer Normally it is a contaminated surface finish.

Re: De-wetting

Electronics Forum | Tue Aug 17 13:32:13 EDT 1999 | Brian

Can anyone help on the subject of de-wetting during the spray coating process. We use PC29M Parts A+B spray coating material, Humiseal tapes and masking dots, Marigold supertouch V70N gloves and Concoat CM533 liquid masking material. We also use a

De-wetting

Electronics Forum | Tue Aug 17 04:12:32 EDT 1999 | Scott J

Can anyone help on the subject of de-wetting during the spray coating process. We use PC29M Parts A+B spray coating material, Humiseal tapes and masking dots, Marigold supertouch V70N gloves and Concoat CM533 liquid masking material. We also use a Ko

TAL during reflow

Electronics Forum | Mon Feb 13 13:43:54 EST 2006 | pjc

You will begin to de-wet at a high TAL and actually likely see all of the conditions you list.

Lead Free De-Wetting...

Electronics Forum | Mon Apr 28 11:27:14 EDT 2008 | vortex337

Thanks, I will give it a try this afternoon.

De-wetting

Electronics Forum | Mon Jul 28 11:22:46 EDT 2008 | blnorman

Iagree with Matt, normally caused by pad surface contamination. Out of curiosity, what is the PCB metallization?

Is %Sn related to de-wetting?, Help!

Electronics Forum | Wed Dec 19 09:56:20 EST 2001 | guicho_v

I'm new in SMT world, and I've got my 1st challenge: I'm having de-wetting issues with a specific IC 160 pins MQFP (six location, failure is random), where one pin has de-wetting (solder reflow OK, and there is evidence of having contact the past and

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