Electronics Forum: cfm (Page 1034 of 7893)

Wave soldering - black residue / bridging

Electronics Forum | Tue Dec 31 02:10:54 EST 2019 | sssamw

The video showing wave contact is not consistent and not stable from width size, make it better.

solder ball

Electronics Forum | Tue Dec 31 01:35:44 EST 2019 | agoesfirmanto

Dear Sir, Thank you for your response. I show you the picture

solder ball

Electronics Forum | Thu Jun 10 19:20:59 EDT 2021 | kojotssss

Hi, Too much paste on grounding pad. Looks like also doesnt have path for gases, for void escaping.

LGA voiding

Electronics Forum | Fri Jan 03 10:26:15 EST 2020 | emeto

Some of the voids are questioned and they might easily be over 25%.

LGA voiding

Electronics Forum | Fri Jan 03 13:36:01 EST 2020 | emeto

We use low voiding formula from Indium.

LGA voiding

Electronics Forum | Tue Jan 07 17:33:26 EST 2020 | SMTA-Norah

Were the boards baked out before soldering? Is there plated over vias in the pads?

LGA voiding

Electronics Forum | Wed Jan 08 10:04:29 EST 2020 | emeto

We don't have plated vias on these pads.

LGA voiding

Electronics Forum | Fri Jan 10 14:37:02 EST 2020 | emeto

Zack, would you recommend longer TAL or higher peak temp or both together?

LGA voiding

Electronics Forum | Tue Jan 14 13:28:44 EST 2020 | cyber_wolf

Your profile looks textbook.

LGA voiding

Electronics Forum | Fri Jan 17 02:49:11 EST 2020 | jakapratama

Yeah, that's a nearly uniformed ramp up profile, I can't see anything's wrong with that.


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