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Ask the Experts Index |
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Aug 7, 2026 How Many Fiducials Per Solder Paste Stencil? We manufacture solder paste stencils for a variety of customers. We have seen as many as 180 fiducials ... R.C. Aug 6, 2026 Solder Alloy Investigation Is there a test to confirm the precise solder alloy used on an assembled PCB? We need to ... R.A. Aug 5, 2026 Reliability Concerns When Converting to Lead-free We are converting to lead free soldering and limited to one SMT line, and we wish to convert ... J.L. Aug 4, 2026 Contamination Using Solvent Dispensers After solder touch-up we use small bench-top solvent dispensers with acid brushes for local spot cleaning. Are we ... R.M. Aug 3, 2026 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 ... P.W. Jul 31, 2026 What Caused SMT Pads to Oxidize After Reflow After our boards (ENIG) were run through reflow, the assembler is stating that the through hole/SMT connector pads ... H.M. Jul 30, 2026 Viscosity of Solder Paste Before Printing What is the general recommended viscosity of solder paste before printing. ... I.M. Jul 29, 2026 Solder Splashing During Wave Soldering We are experiencing solder splash during wave soldering while using both adjustable and dedicated pallets resulting in the ... C.V. Jul 28, 2026 ENIG Solderability Issues We are facing solderability issues on a particular lot of electroless nickel - immersion gold plated circuit boards. ... R.D. Jul 27, 2026 Solder Paste Mixing How can we confirm that our centrifuge machine is properly mixing jars of solder paste to give us ... S.R. |
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