Electronics Forum: soldermask (Page 1 of 29)

Discoloured soldermask

Electronics Forum | Thu Apr 22 10:57:20 EDT 1999 | Jack Coia

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when ot

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 18:07:38 EDT 1999 | Tom B.

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 13:20:04 EDT 1999 | Ben Kirk

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 14:36:33 EDT 1999 | Dave F

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 20:26:39 EDT 1999 | Dave F

On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although whe

soldermask color change around vias

Electronics Forum | Fri Jun 07 11:10:08 EDT 2019 | teejsd

We also have a Foresite C3 for spot testing for ionic contamination. I didn't use it at this spot, but used it some other spots around the PCB that showed this color change and with our C3 we were passing IPC standard for ionics. But I was wonderin

soldermask color change around vias

Electronics Forum | Fri Jun 07 09:50:13 EDT 2019 | teejsd

Closer pics at angle would seem to support soldermask delam. And I am now wondering if our no clean flux is getting properly inactivated where it is sitting under the mask.

seperation of soldermask and pcb

Electronics Forum | Tue Mar 25 09:35:28 EDT 2014 | emeto

Have you tried to bake the boards before you process them?

seperation of soldermask and pcb

Electronics Forum | Tue Mar 25 10:31:05 EDT 2014 | sara_pcb

The boards are baked for 2 hours at 120 deg C Regards, R.Saravanan

soldermask color change around vias

Electronics Forum | Wed Apr 10 17:05:47 EDT 2019 | davef

I wonder if this discoloration isn't delamination. I'd discuss it with my board fabricator.

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