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861 expert questions.

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Jul 21, 2025
IPC-A-610 Class 3 - IPC-A-600 Class 2
If the PCB Assembly inspection requirement is IPC-A-610 Class 3, does it mean that the PCB inspection IPC-A-600 ...
S.R.

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.

Production Floor Temperature and Humidity Loggers
Early this month we had a customer audit. One of the findings regards the environment measurements in our ...
M.R.

BGA Solder Ball Collapse
Do lead free solder balls collapse the same amount as tin-lead solder balls? ...
N.Z.

Depaneling circuit board that contain BGA components
Are there any special requirements for depaneling or V-scoring to separate paneled circuit board if they contain BGA ...
A.A.

Confused About IPC-A-610 Class 2 vs. Class 3
My company is confused about IPC-A-610 Class 2 and Class 3. Some believe that Class 3 is for ...
T.G.

Baking After Cleaning Hand Placed Parts
Is baking required after in-line cleaning an assembly with moisture sensitive parts that were hand placed instead of ...
R.M.

0201 Pick & Place Nozzle Plugging
We are assembling PCBA's containing 0201 passive components. We have a problem with solder paste getting in the ...
C.T.

What is the IPC Definition of Uncommonly Harsh?
IPC-A-610 and other documents define class 3 to include products where "the end use environment may be uncommonly ...
S.M.

Very Low Temp PCBs
We have a requirement for PCBs to be used at temperatures as low as -200 degree C. Are ...
J.V.

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