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Reworked BGA Bridging at the Corners
Recently reworked BGA components are bridged at the corners. What caused the corners of the BGA component to bridge and how can we prevent it?
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Ask the Experts
Estimating Failure Rate During Rework
Is there a way to estimate the potential failure rate introduced by hand rework of one SMT part that involves de-soldering and soldering a new part?
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Ask the Experts
LED Component Shift During Reflow
What can be the root cause of SMT LED Component Shift during reflow?
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Ask the Experts
Flux Residue Visible After 3 Months
After 3 months at the customer site, we see white marks on the PCBA bottom side. The customer claims the white marks are flux residue.
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Ask the Experts
Contaminated Joints Cause an Assembly to Fail RoHS Compliance
Can a few contaminated solder joints cause an entire assembly to fail? Some of the joints were cross-contaminated with leaded solder.
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Ask the Experts
QFN Test Failures Caused by Flux
A test engineer claims that test failures are due to flux residue between terminations that affects the capacitance at the joints. Is this a valid claim?
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Ask the Experts
Use of Nitrogen for Hand Soldering
Is there any reasonable way to hand solder without flux? Is there such a thing as using nitrogen in a local area while hand soldering?
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Ask the Experts
Wave Soldering System Nitrogen Use
How can I calculate the amount of nitrogen used in my wave soldering system?
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Ask the Experts
Conformal Coating in Nitrogen Environment
We operate a conformal coat machine using nitrogen. We are thinking of changing it back to air for cost reasons, what are the pros and cons?
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Ask the Experts
Problems with Insufficient Barrel Fill
We are seeing insufficient barrel fill (60-75%) during lead free wave soldering. Can you point to some reasons why we may be seeing this?
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Ask the Experts << Page 1 of 34 >>
 
 
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