Board Talk
Board Talk is presented by Phil Zarrow and Jim Hall of ITM Consulting.
Phil Zarrow
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.
Jim Hall
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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PCBA Cleaning with Sodium Bicarbonate
PCBA Cleaning with Sodium Bicarbonate
Is there an effect on PCBA long-term reliability when cleaned with a sodium bicarbonate scrub followed by DI water rinse? Jim Hall and Phil Zarrow, The Assembly Brothers, discuss this secnario and share their own experiences.
Board Talk

Solder Paste Inspection - When and Why
Solder Paste Inspection - When and Why
Our facility is considering a 3D solder paste inspection system. Are these systems common and under what condition should we consider buying one?
Board Talk

Big Problems with HASL Finish
Big Problems with HASL Finish
We are able to lift a SOIC off a PCBA using tweezers and no heat. The pads are bare copper, the PCB was manufactured using tin lead HASL finish. The Assembly Brothers, Phil Zarrow and Jim Hall, share their own experiences.
Board Talk

Will Typical No Clean Paste Pass an SIR Test?
Will Typical No Clean Paste Pass an SIR Test?
Will a typical no clean paste pass an SIR test? Is it really clean enough for a conformal coating and 20 years of service?
Board Talk

Shelf Life Before Conformal Coating
Shelf Life Before Conformal Coating
Prior to conformal coating, how long can we keep assemblies in an open condition before they will be impacted by moisture absorption? Jim Hall and Phil Zarrow, The Assembly Brothers, discuss the impact that this will have on their process.
Board Talk

Consensus for Baking Prior to Rework?
Consensus for Baking Prior to Rework?
What is the consensus for baking out moisture in circuit board assemblies prior to convection rework, localized mini-wave rework, or hand soldering rework?
Board Talk

Cleaning Reballed BGA Components
Cleaning Reballed BGA Components
We currently clean reballed BGAs using an ultrasonic cleaner followed by baking to remove moisture. Is this an acceptable practice? Jim Hall and Phil Zarrow, The Assembly Brothers, discuss the best practices given this scenario.
Board Talk

What is Causing Dimples in Blind Via Pads?
What is Causing Dimples in Blind Via Pads?
Recently we encountered defects on some bare boards from our supplier. The defect is a small dimple. What might be the cause of this defect?
Board Talk

Reflow For Rigid Flex
Reflow For Rigid Flex
We have a new PCB assembly that includes a section of flex cable and FR4 circuit board. What are the reflow rules I need to consider? The Assembly Brothers, Phil Zarrow and Jim Hall, discuss the most important reflow guidelines in this scenario.
Board Talk

Proper Exhaust Pressure for Reflow Ovens?
Proper Exhaust Pressure for Reflow Ovens?
What is the proper exhaust pressure for a reflow over? Where should we measure the pressure? How should we measure pressure?
Board Talk