Electronics Forum: after (Page 66 of 696)

PCB with stains bleach after flux aqueous wash

Electronics Forum | Thu May 19 03:39:04 EDT 2016 | jpcwg

Design application software in resistance welding layer options to carry on the design, can put the resistance welding options this functionality, born PCB board factory to actual production of PCB design are window. we are professional PCB manufac

How to calculate BGA height change after reflow oven?

Electronics Forum | Tue Jul 07 10:25:03 EDT 2015 | swag

Dial indicator on a post/base. You might need a fine point tip to get between adjascent components and the BGA. Or... if you're real fance schmancy you could use a CMM if you have one.

Flux residues found after assembly process (Clean process)

Electronics Forum | Fri Jan 08 10:26:23 EST 2016 | junax

To all the experts, Is there any equipment (like coating uv lamp) that can detect flux residues on the pcba?

ENIG (thru hole ring turns black after wave soldering)

Electronics Forum | Thu Jun 30 03:14:34 EDT 2016 | andrzej

Looks like "black pad" issue. More about this here: http://www.ipc.org/feature-article.aspx?aid=Black-pad Definitly PCB supplier need to improve the process.

ENIG (thru hole ring turns black after wave soldering)

Electronics Forum | Mon Aug 22 22:40:52 EDT 2016 | twhoo

analysis report is as attached. Pls let me know what you think of the root cause of this issue? Can i conclude this is a black pad at thru hole ring with a root cause of contaminated gold

ENIG (thru hole ring turns black after wave soldering)

Electronics Forum | Mon Aug 22 23:22:29 EDT 2016 | twhoo

i also notice the carbon and oxygen is high on the defect? Why is that?

How to Calculate PCBA Warpage after complete SMT/Through Hole Assembly?

Electronics Forum | Wed Aug 17 17:17:45 EDT 2016 | davef

Warpage of a completed assembly is an uncommon requirement. I would ask whoever is laying that requirement on you to define how they would like you to measure it.

Best method for BGA removal after urethane conformal coating application.

Electronics Forum | Wed Sep 21 09:07:49 EDT 2016 | johnb1712

We are looking for advice on removal of BGA components once urethane conformal coating has been applied and cured.

Pin Hole Issue after Reflow Soldering - Passive Components

Electronics Forum | Thu Feb 01 12:22:26 EST 2018 | davef

When you talk about baking, I get the impression that you're talking about boards. Are you components dry also?

Pin Hole Issue after Reflow Soldering - Passive Components

Electronics Forum | Fri Feb 02 02:05:49 EST 2018 | ameenullakhan

Hi Davef, Yes we have tried few component for cold baking for around 7 days around 50 to 60 deg C.


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