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874 expert questions.

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Apr 8, 2030
Epoxy Wicking up Wire Insulation
We have 13 gauge insulated wires soldered directly into plated holes in a circuit board. The board is ...
T.J.

Feb 20, 2025
Class 3 Pin Contact Question
I am working on a class 3 product. We have an assembly from one operation that has a ...
E.E.

Feb 18, 2025
Long Term Component Storage
We need to store a variety of electronic SMD components for at least 10 years. What do you ...
R.A.

Feb 17, 2025
Causes of Annular Ring Dewetting
I have a question about selective annular ring dewetting. This failure occurs on Electroless Nickel/Immersion Gold (ENIG) Plating ...
R.L.

Feb 14, 2025
Solder Paste Print Test Boards
We're looking for a better way to manage solder-paste print test boards. Can we use a general test ...
W.H.

Feb 13, 2025
Estimating Failure Rate During Rework
Is there a way to estimate the potential failure rate introduced by hand rework of one SMT part. ...
A.F.

Feb 12, 2025
What Is Causing Slanted Pins After Reflow
I am running small, thin PCBs mounted with pogo pins. After reflow some pogo pins are slanted. What ...
J.A.

Feb 11, 2025
Tented Via Options and Tradeoffs
Just read an inquiry concerning tented via-in-pad where the vias in a thermal pad under a chip are ...
D.N.

Feb 10, 2025
3D AOI Solder Joint Qualification Parameters
We have a new inline 3D AOI system. One of the options on our system allows checking if ...
J.S.

Feb 7, 2025
Cause of Cracking on SOT23 Components
We've recently encountered cracking with SOT-23 parts. The EMS contractor says the machines have been checked and there ...
B.A.

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