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February 10, 2012
Solderability Problems at Low Humidity
Board Talk
Solder Deposits During Wave Soldering
Ask the Experts
Design of New Solder Attach Technologies
Materials Tech
Problems Hand Soldering 24 Layer Board
Ask the Experts
Nitrogen Inerting For Lead-Free Wave Soldering
Production Floor
Problems With Wave Solder Lead Bridging
Board Talk
Wave Soldering Problems
Ask the Experts
Hand Soldering vs. Selective Wave
Ask the Experts
Problems with Blow Holes
Ask the Experts
BGA Processing for Reliability
Production Floor
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Can a Wave Solder Air Knife Cause Defects?
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Can a wave solder machine air knife be the cause of solder joint defects? Just what is a wave solder machine air knife used for?
This program first published January 2009
Board Talk programs are presented by:

Phil Zarrow
Phil Zarrow, ITM Consulting
With over 35 years experience in PCB assembly, Phil is one of the leading experts in SMT process failure analysis. He has vast experience in SMT equipment, materials and processes.

Jim Hall
Jim Hall, ITM Consulting
A Lean Six-Sigma Master Blackbelt, Jim has a wealth of knowledge in soldering, thermal technology, equipment and process basics. He is a pioneer in the science of reflow.
Comments  »
Use the form below to submit a comment.
A co-worker and I were just discussing solving some flux impregnation issues using an air knife after spray flux application. We are of course fighting hole-fill with OSP issues. He has seen this drive the flux further into small holes prior to pre-heat.

Les Beller, Echostar Technologies Corp.
Just listened to discussion on the answer to "Can a Wave Solder Air Knife Cause Defects?" and I want to commend Jim and Phil on their answer to this question, they are right on, air knives do not cause defects but highlight the weakness of the wetting process.

Nice job from an old wave solder air knife process engineer.


Leo Lambert, EPTAC Corp
Enjoy reading and using the techniques you cover.

Firozdin Pirani
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Can a Wave Solder Air Knife Cause Defects?

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