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863 expert questions.

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Dec 7, 2022
Through Hole Connector Solder Joint Hole Fill
When looking at IPC610D in relation to through hole connectors and Class III level soldering. What is the ...
R.D.

Dec 6, 2022
Reliability of Automated Soldering vs. Hand Soldering
On occasion, we have had to place a skip in our SMT placement machine due to unavailability of ...
P.K.

Dec 5, 2022
How to Re-qualify BGA Spheres
What procedure would you recommend to "re-qualify" a lot of BGA spheres. We keep our spheres in a ...
J.D.

Dec 5, 2022
Reusing recovered solder paste
We are an EMS operating mainly in automotive, industrial and lighting electronics segments. We are assembling PCBAs with ...
R.S.S.

Dec 1, 2022
Pick and Place Machine Calibration
In general how often should we calibrate pick and place machines, or run a placement machine process capability ...
B.O.

Nov 30, 2022
Extending Shelf Life for Jars of Solder Paste
We have a few unopened jars of solder paste that have just recently gone past the posted expiration ...
Y.S.

Nov 29, 2022
Profiling for Double Sided BGA
We are about to produce double sided BGA boards - BGA components on both sides. What advice would ...
B.O.

Nov 28, 2022
Solder Balling Prediction Formula
We have experienced mid chip solder balling on some passives. Is there a mathematical calculation that can be ...
R.W.

Nov 23, 2022
Stencil Cleaning Frequency
What is the industry standard for the amount of time between stencil cleaning? ...
C.C.

Nov 22, 2022
Exposed Copper Risk
We received many PCB's where a modification have been completed. The modification involved soldering a chip cap to ...
A.H.

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