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Ask the Experts Index |
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Jul 16, 2026 Question About IPC-6013 Qualification and Performance Specification for Flexible/Rigid-Flexible Printed Boards Can anyone explain why there is no Space and Military addendum for IPC-6013, as available for IPC-6012 and ... P.O. Jul 15, 2026 Coils Rotated After Reflow We have a coil on a PCB that rotates during reflow. See the photo. What is causing this ... Y.I. Jul 14, 2026 Stencil Pattern for Thermal Pads on QFNs We need more information regarding the stencil pattern for thermal pads on QFNs. We know why it is ... C.P. Jul 13, 2026 Component Shifting We have a problem with chip component shifting that is detected during automatic optical inspection. The shifting is ... V.E. Jul 10, 2026 What Is Causing Connectors to Bow? I have a connector that is bowing during the lead-free soldering process. When the connector is put through ... B.S. Jul 9, 2026 Cleaning No-Clean Solder Paste We are building small lots of circuit board assemblies using no-clean solder paste. We prefer to remove the ... M. K. Jul 8, 2026 Solder Paste Alloy Check We have a production line that runs mainly leaded paste. We accidentally assembled boards using lead-free paste and ... R.L. Jul 6, 2026 Challenge Wetting Solder to Brass Pins In our production we have a product with a connector. The connector pins are made of brass, and ... D.G. Jul 2, 2026 Class 3 Cleaning Requirements We recently received our first contract to assemble Class 3 circuit board assemblies. Are there any changes we ... L.L. Jul 1, 2026 Mixing Different SAC305 Solders We have been using SAC305 bar solder from one supplier. We now want to source it from a ... M.K. |
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