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Ask the Experts Index |
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May 26, 2026 Solder Ball Wrinkles Why do wrinkles form on the surface of solder balls during reflow? This device uses Pb37Sn63 solder balls. ... L.L. May 22, 2026 Assembly Question for Soldering USB Connectors We need to assemble approximately 50,000 straddle USB connectors per year. What is the best way of mounting ... P.B. May 21, 2026 BGA Die and Pry Testing See the image of a die and pry flip chip BGA. Are these results Kirkendall Voiding or some ... J.J. May 20, 2026 Rise of Bismuth Levels in our Solder Pots We have an issue of concentrating bismuth in our selective solder machines. We have two machine and both ... J.G. May 15, 2026 Inspection for Hidden Solder Joints We are integrators working on automating the assembly for a high-volume medical device that requires multiple boards to ... B.S. May 14, 2026 Solution for Warped PCBAs From a large lot we have 20 populated boards with components on both sides that are warped. Components ... E.J. May 13, 2026 BGA Component Cleaning Spec Is there a standard or or specification covering requirements for BGA cleaning after rework? ... E.C. May 12, 2026 Tin Whiskers and Vapor Phase Reflow Can we solder components with tin-plated leads using Sn63Pb37 solder paste in vapor phase reflow (215C) without a ... M.B May 11, 2026 Soldering Station Calibration To calibrate or not, that is the question. When our company purchased new soldering stations two years ago ... A.A. May 8, 2026 Solder Paste Stencil Inactivity How long can we leave solder paste on a stencil without any activity, wiping, etc.? ... S.K. |
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