Electronics Forum: cosmetic (Page 1 of 13)

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 08:08:10 EDT 2005 | davef

Could the temperature of your reflow recipe be exceeding the limits of the materials used to fabricate your board?

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 09:08:55 EDT 2005 | ktron

Hi Jim, What type of your PCB finish?

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 22:51:39 EDT 2005 | plcc

Hi Davef, The whole laminate turns yellowish.

PCB cosmetic reject after reflow

Electronics Forum | Tue Aug 09 20:51:58 EDT 2005 | plcc

Hi Davef, I've found it. Very useful info. Thanks a lot.

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 05:43:09 EDT 2005 | plcc

Does anyone come across the problem of pcb turns yellowish color after going thru' reflow under ROsH condition?

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 20:22:43 EDT 2005 | plcc

Hi Ktron, I'm still waiting for my supplier to get back to me on the type of finishing. Usually what type of finishing is recommended for reflow under ROsH condition?

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 20:25:39 EDT 2005 | plcc

Hi Davef, I'm suspecting that too! The recipe we are using is the optimum for good soldering results. I'm checking with our supplier on the type of pcb material. Do you know the recommended material for pcb undergoing reflow, under ROsH condition?

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 21:34:44 EDT 2005 | davef

Jim Can you be more specific? What's going "yellow / beige" on you? * Laminate * Solder mask * Legend

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 21:43:23 EDT 2005 | plcc

Hi Davef, After reflow, the pcb board turns yellowish color. However, the board still pass thru' functional test.

PCB cosmetic reject after reflow

Electronics Forum | Mon Aug 08 22:40:49 EDT 2005 | davef

Jim Can you be more specific? What's going "yellowish" on you? * Laminate * Solder mask * Legend

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