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Ask the Experts
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Using Solder Paste Beyond the Expiration Date
We assembled a batch of PCBs using a water soluble paste that was beyond the expiration date. After cleaning we are seeing a white powder residue. Do you think it is ...
Responses by:
Georgian Simion
Engineering and Operations Management, Independent Consultant Greg York
Technical Sales Manager, BLT Circuit Services Ltd Tony Lentz
Field Applications, FCT Assembly Karl Seelig
, Deck Street Consultants Terry Munson
President/Senior Technical Consultant, Foresite Edithel Marietti
Senior Manufacturing Engineer, Northrop Grumman Fritz Byle
Process Engineer, Astronautics Kay Parker
Technical Support Engineer, Indium Corporation Mitch Holtzer
Director of Reclaim Business, Alpha Assembly Solutions Leo Lambert
Vice President, Technical Director, EPTAC Corporation
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Epoxy Wicking up Wire Insulation
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Class 3 Pin Contact Question
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Long Term Component Storage
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Causes of Annular Ring Dewetting
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Solder Paste Print Test Boards
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Estimating Failure Rate During Rework
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What Is Causing Slanted Pins After Reflow
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MORE ASK THE EXPERTS
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What Year Was It?
The day was Feb 21. What year was it?
Malcolm X Assassinated
Malcolm X, an African American nationalist and religious leader, is assassinated by rival Black Muslims while addressing his Organization of Afro-American Unity.
See the answer below.
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What Year Was It Answer
Malcolm X Assassinated
Answer: February 21, 1965
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February 21, 2025
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OpenAI Tops 400 Million Users Despite DeepSeek's Emergence
OpenAI's rapid growth continues, with active users surging to 400 million since December. Enterprise adoption has doubled to 2 million users, fueled by organic consumer interest. Despite rising competition from DeepSeek and legal battles, OpenAI remains confident in its expansion.
CNBC
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New Quantum Computing Breakthrough by Microsoft
Microsoft's Majorana 1 chip revolutionizes quantum computing with its topological qubit design, boosting stability and scalability. Competing with Google and China, it aims for a million-qubit scale, pushing fault-tolerant quantum computing closer to reality.
EE Times
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iPhone 17 could be 9% more expensive due to Trump's tariffs
Apple unveiled the iPhone 16e, confirming most rumors but surprising buyers with a $599 price tag—$100 more than expected. Meanwhile, Trump’s upcoming tariffs could push iPhone 17 prices up 9%, forcing Apple to rethink sourcing and pricing strategies.
BGR
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How to Transform Your Business Operations Through Process Innovation
ISO 56001 strengthens innovation management by promoting systematic process mapping, driving continuous improvement. Entrepreneurs must embed innovation principles into governance, ensuring sustained growth through iterative refinements in business operations.
Entrepreneur
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This 1.9-pound smartphone battery life can be measured in months
Oukitel's WP100 Titan redefines battery life with a massive 33,000 mAh battery, offering up to 183 hours of talk time. This rugged smartphone features a 6.8-inch display, a 200MP camera, a built-in projector, and reverse charging, making it a powerhouse for endurance-focused users.
TechSpot
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Desperately Seeking AGI: Throwing Good Money After Bad
Chinese AI startup DeepSeek disrupted the industry with a cost-effective LLM that rivals U.S. models, slashing Nvidia's valuation by $600 billion. While demand for high-end chips wanes, Big Tech doubles down on AI infrastructure, chasing AGI despite mounting skepticism.
EE Times
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Case Studies of Harsh Application Environments
This paper will present scenarios where environmental factors played a role in inducing various degradation mechanisms to Rockwell products. The paper will attempt to concentrate on the unusual scenarios, or where assumptions were made too early in the analytical process that likely hindered efficient determination of root cause.
Circuit Insight - Analysis Lab
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Test Your Knowledge
What does the camera shutter speed B stand for?
See answer below.
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Quote of the Day
"Autumn is a season followed immediately by looking forward to spring."
Doug Larson
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"For this part, I credit hard work, ingenuity and determination. The other part, I blame on gravity."
Copyright © Randy Glasbergen
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Test Your Knowledge Answer
What does the camera shutter speed B stand for?
Answer: Bulb
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