Electronics Assembly Knowledge, Vision & Wisdom HOME PROGRAMS DIRECTORY SUBSCRIBE ARCHIVE/TRANSLATE Ask the Experts << Page 1 of 34 >> Arranged via association with Circuitnet.. See the Expert Panel | Submit A Questions | Join the Panel Programs are sorted by published date, most recent first. Directory Search         Program Search         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? Ask the Experts Test Probe Problems After Pin-In-Paste We are having test probe contact issues with our Pin-In-Paste process. Should all the flux vaporize off in the reflow process? Any suggestions? Ask the Experts Hot Air Solder 0201s and 01005s We are struggling to solder and rework small parts - 0201s and 01005s. I have been using a small nozzle hot air solder rework station with adjustable air flow. 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? Ask the Experts LED Component Shift During Reflow What can be the root cause of SMT LED Component Shift during reflow? 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. Ask the Experts Mixed Process Solder Joint Appearance, Smooth or Grainy? We are using RoHS components that are placed using tin/lead solder paste and soldered in oven using a tin/lead reflow profile. What should we expect? Ask the Experts Wave Soldering System Nitrogen Use How can I calculate the amount of nitrogen used in my wave soldering system? Ask the Experts Conformal Coating Recommendation We are developing an outdoor LED module. The product needs a 5 year service life. What type of conformal coating do you suggest? Ask the Experts 0201 Pick & Place Nozzle Plugging Our stencil vendor is recommending the same aperture size going to a .004" think stencil. I am concerned about reducing the volume by 20%. Ask the Experts Ask the Experts << Page 1 of 34 >> About | Advertising | Archives | Contact | Directory | Directory Search | Directory Submit | Privacy | Programs | Program Search | Sponsorship | Subscribe | Terms | Translate Circuit Insight 6 Liberty Square #2040, Boston MA 02109 USA Jeff Ferry, Publisher | Ken Cavallaro, Editor/Business Manager Copyright © Circuitnet Media LLC. All rights reserved. A Circuitnet Media Publication