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870 expert questions.

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Apr 26, 2024
Flux Residue During Pin-in-Paste
Our application is for pin-in-paste reflow using tin/lead no-clean, solder paste. Is it standard practice to increase the ...
M.W.

Apr 25, 2024
Matte Black Solder Mask Defects
We're working with a PCB vendor to fabricate panels of 6-layer circuit boards with ENIG plating and matte ...
M.C.

Apr 24, 2024
Conformal Coating in Nitrogen Environment
We operate a conformal coat machine using nitrogen. We are thinking of changing it back to air for ...
M.E.

Apr 23, 2024
BGA Placement Paste or Only Flux
What are the risks with using flux-only vs. solder paste for placing BGAs in a hybrid lead-free environment? ...
C.C.

Apr 22, 2024
Solder Paste Thickness Measurements
On average how many locations should we measure on our PCBs to confirm our solder paste thickness? Our ...
M.S.

Apr 19, 2024
Manual or Automated Assembly?
We are a new start-up assembling wireless sensors. All assembly is now manual, we have no automation. We ...
R.M.

Apr 18, 2024
Question About Dry Storage of PCBA's
One of our products uses 3 PCBAs made on our own internal surface mount line. After the PCBA's ...
M.M.

Apr 17, 2024
Inspection for Hidden Solder Joints
We are integrators working on automating the assembly for a high-volume medical device that requires multiple boards to ...
B.S.

Apr 16, 2024
Assembly Question for Soldering USB Connectors
We need to assemble approx. 50,000 straddle USB connectors per year - Wurth Electronik 632712000011. What is the ...
P.B.

Apr 15, 2024
Is Solder Mask Considered an Insulator
If solder from a PTH lead, on the source side, touches solder mask that is over a copper ...
E.C.

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