Electronics Forum: silver turning yellow (Page 1 of 8)

Component termination contain silver

Electronics Forum | Thu Apr 20 14:08:34 EDT 2006 | cw

hi All, recently i have received some parts with the lead turning black, and i then found out the leads are silver plating, is that going to be a problem? or it is simply a cosmetic issue? pls advise ASAP!! thansk a lot!!

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Tue Sep 02 21:34:23 EDT 2014 | phyllishwl

Thanks Rob for your detail comment. It is really helpful!!

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Wed Sep 03 03:51:36 EDT 2014 | methewbell

Hello everyone, hope people will find this information useful... In UK you can find best pcbs at a great price from here your local source for PCB Manufacturing in UK with International Standards We manufacture high quality and reliable prototype P

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Thu Sep 04 05:18:45 EDT 2014 | sasa29

PCB Manufacturing demands preparation of design well in advance. The finalized designs are fed into the systems and the production is carried away. If the boards are of small sizes, multiple boards are made on a single large board and separated into

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Thu Aug 28 23:15:44 EDT 2014 | phyllishwl

Hi all, Our production reported that they found 3 panels out of 53 panels with strange phenomenon after reflow. 1/ Blister / Delamination of PCB panels, 2pcs blister/delamination under solder mask, 1pc under Gold plating at Gold finger 2/ Silkscr

Part of PCB silkscreen turns yellow brownish

Electronics Forum | Fri Aug 29 09:39:08 EDT 2014 | rgduval

I'll try to deal with the issues as you've presented them. 1. Blistering/delamination, shown in photo 2. The most likely cause of blistering/delamination like this is moisture in the boards. The moisture can get into the boards in multiple ways..

Component Terminals with silver plating

Electronics Forum | Thu Apr 20 14:11:24 EDT 2006 | cw

hi All, recently i have received some parts with the lead turning black, and i then found out the leads are silver plating, is that going to be a problem? or it is simply a cosmetic issue? pls advise ASAP!! thansk a lot!!

Flux turns BRIGHT yellow when in contact with Tin/ Lead

Electronics Forum | Wed Apr 01 07:20:51 EDT 2020 | proceng1

The brush also turned yellow.

Flux turns BRIGHT yellow when in contact with Tin/ Lead

Electronics Forum | Wed Apr 01 07:18:29 EDT 2020 | proceng1

We are using Superior 515 flux to clean and tin selective solder nozzles. Yesterday the flux turned a bright yellow (like a highlighter) when heated after the flux being applied. This does not happen with our Lead Free solder, only the Lead alloy.

Flux turns BRIGHT yellow when in contact with Tin/ Lead

Electronics Forum | Wed Apr 01 11:41:34 EDT 2020 | emeto

Very interesting.Safety datasheet suggest acid that might turn yellowish. I am interested is it cleaned easily with water?

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