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Experts Questions
Stencil Pattern for Thermal Pads on QFNs
We need more information regarding the stencil pattern for thermal pads on QFNs. We know why it is important to "mesh" but need more info regarding what is best aperture size, number ...
Responses by:
Kishan Sarjoo, Process Engineering Manager - Electronics, Altech UEC, South Africa
Georgian Simion, Engineering and Operations Management, Independent Consultant
Tony Lentz, Field Applications, FCT Assembly
Stephanie Nash, Director, Integrated Ideas & Technologies, Inc.
Brien Bush, Manufacturing Applications Specialist, Cirtronics Corp.
Bill Coleman, Vice President Technology, Photo Stencil
Edithel Marietti, Senior Manufacturing Engineer, iDirect
Gary Freedman, President, Colab Engineering
Eric Bastow, Senior Technical Support Engineer, Indium Corporation
AOI or X-Ray inspection?
My Company is looking for our first automatic inspection system, should we consider AOI or X-Ray inspection?
Responses by:
Giancarlo De La Garza, Sales, Nordson YESTech
Stacy Kalisz Johnson, Americas Marketing Development Manager, Agilent Technologies
Dr. David Bernard, Product Manager, Dage Precision Industries
Dr. Craig D. Hillman, CEO & Managing Partner, DfR Solutions
Andrew Joos, VP of Business Development, X-Line Asset Management
Joe Belmonte, Principal Consultant, ITM Consulting
Mark Norris, Executive Vice President Sales & Marketing, ViTechnology
Hot or Cold DI Water Rinse
How important is the use of hot water in our deionized batch and inline cleaning systems? As I understand it, a hot water rinse will lower the surface tension to better ...
Responses by:
Mike Konrad, President, Aqueous Technologies
Steve Stach, President, Austin American Technology
Daniel (Baer) Feinberg, Vice President, Fein-Line Associates
Umut Tosun, Application Technology Manager, Zestron America
Greg York, Technical Sales Manager, BLT Circuit Services Ltd
Jim Williams, Chairman, Polyonics, Inc.
Brian Smith, General Manager - Electronic Assembly Americas, DEK International
Flux Residue Visible After 3 Months
This question pertains to use of no-clean flux. Upon completion and inspection of PCB assemblies, there was no evidence of contamination or residue. We shipped them to a customer. ...
Responses by:
Tom Forsythe, Vice President, Kyzen Corporation
Greg York, Technical Sales Manager, BLT Circuit Services Ltd
John Vivari, Application Engineering Supervisor, Nordson EFD
Terry Munson, President/Senior Technical Consultant, Foresite
Umut Tosun, Application Technology Manager, Zestron America
Conformal Coating & Humidity
Can conformal coating protect a circuit board that will be operating in a humid environment? We currently use a dip process to conformal coat our boards. However we're having problems ...
Responses by:
Scott D. Szymanski, Global Marketing Manager, Nordson MARCH
Edward Zamborsky, Regional Sales Manager, OK International Inc.
James Mahoney, Applications Project Manager, Quick Turn Flex Circuits LLC
Dr. Brian Toleno, Application Engineering, Henkel Electronics
Jade Bridges, European Technical Support Specialist, Electrolube Ltd
Wayne Wagner, President, Krayden Inc.