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Experts Questions
Cleaning an assembled board with IPA
If the PCBA is cleaned with IPA to remove the no-clean flux residue, will the IPA residue on the PCBA cause a potential electrochemical migration problem over time? If not, what kind ...
Responses by:
Umut Tosun, Application Technology Manager, Zestron America
Karl Seelig, Vice President of Technology, AIM
Brian Smith, General Manager - Electronic Assembly Americas, DEK International
Dr. Brian Toleno, Application Engineering, Henkel Electronics
Mike Jones, Vice President, Micro Care
Problems with defect BGA connections on large BGA's and on ENIG plated boards
We are an EMS. Our customers send us RMA's with defect BGA connections but only on large BGA's and on ENIG plated boards from the same board manufacturer. We experienced these defects ...
Responses by:
Dr. Craig D. Hillman, CEO & Managing Partner, DfR Solutions
Ken Bliss, President & CEO - Retired, Bliss Industries, Inc.
Bill Coleman, Vice President Technology, Photo Stencil
Roger Gibbs, Managing Director, PDR
Proper method to bake PCB's
We need to bake PCBs. Is there a correct method? Can we put the PCBs one over the other or do we need to put trays to hold the boards horizontally? We need your ...
Responses by:
Richard D. Stadem, Advanced Engineer/Scientist, General Dynamics
Robert "Bob" Lazzara, President, Circuit Connect, Inc.
Karl Seelig, Vice President of Technology, AIM
Alan Lewis, Director of Application Engineering, Asymtek
Dr. Craig D. Hillman, CEO & Managing Partner, DfR Solutions
Dr. Brian Toleno, Application Engineering, Henkel Electronics
Charles S. Leech Jr., Director of Engineering, Innovative Drying Co.
Remove and replace a 240 pin connector
I have to remove and replace a 240 pin connector from a lead free board with immersion silver plating. Board is 0.125" thick and we use SAC305. Do you have any advice on how to achieve this process ...
Responses by:
Al Cabral, Regional Sales Manager , Finetech
Marc Peo, President, Heller Industries Inc.
Dr. Craig D. Hillman, CEO & Managing Partner, DfR Solutions
Bob Black, President and CEO, Juki Corporation
Jeff Ferry, President, Circuit Technology Center, Inc.
Average Temperature/Humidity for an Electronics Assembly Facility?
I'm the Production Manager for a contract manufacturer. We do mostly thru-hole circuit boards and limited SMT with the small pick and place we have. In the summer time the humidity reaches ...
Responses by:
Greg Hueste, Senior Applications Engineer, Speedline Technologies
Edward Zamborsky, Regional Sales Manager, OK International Inc.
Dr. Craig D. Hillman, CEO & Managing Partner, DfR Solutions
Phil Kinner, Global Business Director conformal coatings division, Electrolube
Brian Smith, General Manager - Electronic Assembly Americas, DEK International
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