Electronics Forum: pad and repair and quantity (Page 1 of 1)

No-clean SMT process and water wash (Clean) repair

Electronics Forum | Wed May 25 18:33:18 EDT 2005 | russ

We have passed testing using this process, I would consider it on a case by case basis however. We are very careful about the quantity of the O.A. that we use. The water soluble flux is gone after cleaning unless it was/could be encapsulated or tra

Aluminum and silica contamination

Electronics Forum | Wed Jan 12 13:42:19 EST 2011 | dwonch

Hi All, I'm hoping there is a PCB expert or two hanging around. We're having some solderability issue on our boards. The finish is ENIG but it doesn't seem to be related to the finish process itself. We did SEM and EDX analysis and found aluminum an

First time Pick and Place Machine

Electronics Forum | Mon May 22 12:44:11 EDT 2017 | emeto

I always would like to go with new equipment compared to used. You will get free technical support with the deal for 2-3 years including parts, repairs, proper training..... If speed and quantity are not the key, there are dozen of small machines out

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef

Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept

What is the preffered spacing between PTH and SMT pads

Electronics Forum | Wed Apr 29 04:57:08 EDT 2009 | davepick

It depends on the application what will be considered the biggest issue to avoid (production or longterm reliability). Tin Whiskers are bit of an unknown quantity - but a more realistic problem could be dendritic growth / electromigration forming sho

Selecting pick and place machine (comparison/personal experience/sales pitches)

Electronics Forum | Fri Apr 30 10:42:40 EDT 2021 | oxygensmd

I have a customer who ask close to prototyping jobs with low volume and high-mix components. A regular job have around 5-30 pieces board but have high quantity and many type of components. All the time over 1000 pieces of parts on board from 250-350

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