Ask the Experts
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 black solder mask. Initial samples show some visual defects ...
Responses by:
Anki Forsberg
Senior Quality Engineer - PCB Assembly , Axis Communications
Kevin Mobley
PCBA Engineering Liaison, General Atomics Electromagnetic Systems Group
Amit Bahl
Director of Sales and Marketing, Sierra Circuits
Andres Rojas
Engineering Director / Master IPC Trainer (MIT), AMMSA Solutions
Tod Cummins
Director of Corporate Quality Assurance, Delta Group Electronics Inc.
Tony Lentz
Field Applications, FCT Assembly
Fritz Byle
Process Engineer, Astronautics
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What Year Was It?
The day was Apr 25. What year was it?
Andropov Writes to U.S. Student
What Year
The Soviet Union releases a letter that Russian leader Yuri Andropov wrote to Samantha Smith, an American fifth-grader from Manchester, Maine, inviting her to visit his country.
See the answer below.
What Year Was It Answer
Andropov Writes to U.S. Student
Answer: April 25, 1983
April 25, 2024
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Test Your Knowledge
Arrange these Roman Numerals from largest to smallest value: L, X, D, C
See answer below.
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"If lawyers are disbarred and clergymen defrocked, doesn't it follow that electricians can be delighted, musicians denoted?"
George Carlin
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"Sometimes it's smooth sailing, sometimes it gets rough and stormy and sometimes you sink to the bottom with your crew. That's why it's called leadership."
Copyright © Randy Glasbergen
Test Your Knowledge Answer
Arrange these Roman Numerals from largest to smallest value: L, X, D, C
Answer: D = 500, C = 100, L = 50, X = 10