| Board Talk |
Board Talk is presented by Phil Zarrow and Jim Hall of ITM Consulting.
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Phil Zarrow - With over 35 years of 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.
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Jim Hall - 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.
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What is Considered Acceptable PCB Rework and Repair?
An operator attempted to repair three damaged conductors using bus wire overcoated with epoxy. Do you consider this repair acceptable? Is there an IPC spec we should follow? Jim Hall and Phil Zarrow, The Assembly Brothers, address this question.
Board Talk
Why Uneven Conformal Coating?
We are experiencing an issue with our conformal coating. On matte finish boards the coating is vibrating away from some others and building up in others.
Board Talk
Selective Solder Paste Printing for BGA Components
Could we print paste only on the pads that have functional requirements? Could we skip printing on 50 or more of the interior pads since they serve no function? Phil Zarrow and Jim Hall, The Assembly Brothers, answer these questions.
Board Talk
What is the Suggested Humidity Level for Electronics Assembly?
I am aware of the suggested humidity level for an electronics assembly facility. Do the same limits apply within a 100,000 class clean room?
Board Talk
What is Causing Long-Term Soldering Joint Cracking in Automotive Application?
We are seeing field returns due to solder joint cracking on the pin of a 16-pin through-hole connector. What might be the cause of the joint cracking? Phil Zarrow and Jim Hal. The Assembly Brothers, address this question.
Board Talk
Hand Soldering Reliability
What are the differences in reliability for SMT machine placement followed by reflow vs. hand placement followed by hand soldering in surface mount?
Board Talk
Does HASL or ENIG Reduce Creep Corrosion in Corrosive Environments?
We make electronics equipment used in corrosive environments. Do you recommend the use of HASL versus immersion gold for our application? Jim Hall and Phil Zarrow, The Assembly Brothers, discuss this scenario and offer their recommendations.
Board Talk
Opens With Assembled QFN Components
We are experiencing opens on assembled QFN components at a rate of 9%. The failure only appears in rows near the component center. What is happening?
Board Talk
Tips When Moving a Reflow Oven
After moving a reflow oven to a different site, what steps do you need to perform on the machine for the machine to be certified? Jim Hall and Phil Zarrow, The Assembly Brothers, discuss the steps needed for certification and share their own expertise.
Board Talk
Issues With SMT Component Alignment
During automatic optical inspection our chip components are shifting. This is not limited to single components and changes daily.
Board Talk
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