Electronics Forum: black stain on pcb (35)

solder black stains after reflow

Electronics Forum | Wed Sep 26 12:16:44 EDT 2012 | bwjm

Hi Guys,recently i am facing an issue. Refer to the attached photo. This PCB is high RF speed, gold immersion single layer. After reflow, my solder seems to have black stains on it. I tried with SAC305 paste water soluble and no-clean, both results a

Stain on PCB from reflow oven

Electronics Forum | Fri Apr 16 13:22:48 EDT 2010 | stepheniii

Have you tried running a few bare boards through the oven? If there is no flux on them and you still get the "stains" then I think you can eliminate the flux as the cuprit. And I've been told that white is the second most difficult solder mask colou

Industry News: black stain on pcb (5)

PCB Connectors Screw on for Security

Industry News | 2003-03-17 09:40:03.0

Omnimate BLZ/BLZF 5.08F PCB connectors have integral screwed flanges to ensure safe and secure connection under the most severe vibration conditions.

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SMTA South East Asia Technical Conference on Electronics Assembly Technologies Call for Presentations Announced

Industry News | 2009-04-23 20:54:01.0

MINNEAPOLIS, MN � The SMTA is pleased to announce its latest technical event in Penang, Malaysia. The SMTA South East Asia Technical Conference on Electronics Assembly Technologies will be held November 19-20, 2009 at the Equatorial Hotel in Penang, Malaysia. Presentations are currently being solicited for the following key technology tracks:

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Videos: black stain on pcb (1)

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EKT AOI machine application: inspection after stencil printing, pre/post reflow oven, pre/post wave soldering?FPC etc. Stencil printing: Solder unavailability, insufficient or excessive solder, solder misalignment, bridging, stain, scratch etc. Compo

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Express Newsletter: black stain on pcb (905)

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