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Sponsor
kyzen

The "Fried Egg" Effect in Soldering
Burnt-on flux residue that is visible on the solder mask of PCBs after improper reflow settings produces significant challenges to the reliability of finished boards.
KYZEN
Smart-Sonic
Sponsor
Plasmatreat-GmbH

Openair-Plasma for Semiconductor Manufacturing
Openair-Plasma for semicon-ductor production is an alternative to vacuum plasma. Typical apps are wire bonding, die bonding & pre-molding. Download here.
Plasmatreat GmbH

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884 expert questions.

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Apr 15, 2026
Out-gassing and Cleaning
I have created a series of PCBs with no solder mask. I will be soldering 2 spring pins, ...
S.P.

Apr 14, 2026
Contamination From Anti-static Foam
I have a vintage computer board that is contaminated with what appears to be decomposed anti-static foam. The ...
J.G.

Apr 13, 2026
Organic Flux Residue Concerns
What short-term and long-term concerns should we have with product reliability if we skip cleaning after rework? Our ...
D. B.

Apr 10, 2026
Lifted Lead on SOT Component
We are having a high rejection rate with a SOT883 component where one of the small pads lifts ...
R.D.

Apr 9, 2026
Ultrasonic Cleaning and Surfactants
I've heard that deionized water is a poor conductor of ultrasonic cavitations. Can we add a small amount ...
R.P.

Apr 8, 2026
Frequency of Temperature and Relative Humidity Tracking
We have constant monitoring devices for temperature / relative humidity and are recording in our work/assembly areas. Is ...
B.S.

Apr 6, 2026
Pin-in-Paste Hole Stencil Printing
We want to use a 8mil thick stencil to deposit paste into thru holes in a 93mil thickness ...
E.P.

Apr 3, 2026
Pre-bake in a Vacuum
Can the time for pre-baking of components and bare PCBs to eliminate moisture be reduced by using a ...
E.B.

Apr 2, 2026
Considering Plasma Cleaning
We build microelectronic circuits with various small pitch flip chip die's and an assortment of passive components. To ...
T.G.

Mar 31, 2026
Critical Part Fixture During Reflow
I'm populating a PCA with a component that has critical placement requirements. My pick/place machine does not have ...
R.W.

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Sponsor
SEIKA-America

Sayaka Table-Top PCB Router, SAM-CT23S with online camera
Advanced image processing software offers easy programming and CAD base offline programming. Automatic alignment compensation.
Seika
ECD