Ask the Experts Index
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865 expert questions.

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Sep 29, 2023
Solder Paste Life on the Stencil
Our solder paste has a specified life for exposure on the stencil at 10 hours. We run our ...

Sep 28, 2023
Jumper Wire Gauge
Is there a recommended gauge and insulation type for standard circuit board jumper wires? Is there a suggested ...

Sep 27, 2023
Wet Based Stencil Cleaning or Dry Wipe Stencil Cleaning
For automatic under-stencil cleaning there are many cleaning methods including dry vacuum cleaning, and wet dry vacuum cleaning. ...

Sep 26, 2023
Suggested Limit for PCBA Heat Cycles
What is the suggested limit for the total number heating cycles that can be done on one PCB ...

Sep 25, 2023
Rise of Bismuth Levels in our Solder Pots
We have an issue of concentrating bismuth in our selective solder machines. We have two machine and both ...

Sep 22, 2023
Options for Reballing BGA Components
Which of the following do you recommend when reballing BGA components? Reballing with solder paste and solder spheres, ...

Sep 21, 2023
BGA Component Cleaning Spec
Is there a standard or or specification covering requirements for BGA cleaning after rework? ...

Sep 20, 2023
Solder Mask Thickness Tolerance
Our standard PCB fabrication drawing indicates solder mask of 0.8mil thickness. If this is an acceptable standard note, ...

Sep 19, 2023
Legend Marking Discoloration
We are replacing LEDs damaged during the manufacturing process. During the rework process the legend surrounding the rework ...

Sep 18, 2023
Moisture Sensitivity Level for Bare Boards
I am trying to ease our way through a NADCAP audit and I am having some trouble with ...

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