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Ask the Experts Index

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886 expert questions.

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Aug 7, 2026
How Many Fiducials Per Solder Paste Stencil?
We manufacture solder paste stencils for a variety of customers. We have seen as many as 180 fiducials ...
R.C.

Aug 6, 2026
Solder Alloy Investigation
Is there a test to confirm the precise solder alloy used on an assembled PCB? We need to ...
R.A.

Aug 5, 2026
Reliability Concerns When Converting to Lead-free
We are converting to lead free soldering and limited to one SMT line, and we wish to convert ...
J.L.

Aug 4, 2026
Contamination Using Solvent Dispensers
After solder touch-up we use small bench-top solvent dispensers with acid brushes for local spot cleaning. Are we ...
R.M.

Aug 3, 2026
Mixed Process Solder Joint Appearance, Smooth or Grainy?
We are using RoHS components that are placed using tin/lead solder paste and soldered in oven using a ...
P.W.

Jul 31, 2026
What Caused SMT Pads to Oxidize After Reflow
After our boards (ENIG) were run through reflow, the assembler is stating that the through hole/SMT connector pads ...
H.M.

Jul 30, 2026
Viscosity of Solder Paste Before Printing
What is the general recommended viscosity of solder paste before printing. ...
I.M.

Jul 29, 2026
Solder Splashing During Wave Soldering
We are experiencing solder splash during wave soldering while using both adjustable and dedicated pallets resulting in the ...
C.V.

Jul 28, 2026
ENIG Solderability Issues
We are facing solderability issues on a particular lot of electroless nickel - immersion gold plated circuit boards. ...
R.D.

Jul 27, 2026
Solder Paste Mixing
How can we confirm that our centrifuge machine is properly mixing jars of solder paste to give us ...
S.R.

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Plasma Etch PE-Avenger
The PE-Avenger is an ultra low-cost entry level plasma cleaning system allowing more labs to utilize plasma. It's a low frequency plasma cleaner designed for surface activation and organics removal.
Plasma Etch
Glenbrook-Technologies