Blog
Silicone Potting Cure Inhibition: Causes and Test Checks
Diagnose silicone potting that stays sticky. Compare cure inhibition with mixing and depth problems, review SYLGARD 184 data, and use a contact-test checklist.
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Solder Paste Stencil Cleaning: Methods and Restart Checks
Compare offline stencil cleaning and printer under-wiping. Check cleaner restrictions, aperture condition and first-print evidence before restarting SMT assembly.
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Solder Paste Powder Size: Type 3 vs Type 4 and Stencil Checks
Compare Type 3, Type 4 and Type 5 solder powder, check aperture geometry, and use a qualification checklist before changing paste for fine-pitch assembly.
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Solder Paste Tack Time: Placement Delays and Component Movement
Distinguish tack time from stencil life, interpret AMTECH paste parameters, and use a staged inspection log to investigate component movement before reflow.
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Solder Paste Slump Test: Cold vs Hot and Bridging Checks
Separate solder paste slump from stencil smearing, compare cold and hot tests, and use a practical evidence checklist before releasing an SMT build.
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Conformal Coating Thickness: Measurement and Acceptance Checks
Compare wet and dry conformal coating thickness, review MG 422B limits, and use a practical inspection checklist for PCB coating acceptance.
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PCB Solderability Test: Wetting Methods and Failure Checks
Choose PCB solderability tests, compare wetting methods, and separate finish problems from assembly faults with a practical supplier evidence checklist.
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PCB Moisture Absorption: Material Data and Validation Checks
Compare PCB moisture absorption data, understand FR4 vs aluminum limits, and use a practical test checklist before approving a laminate or stackup.
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PCB Potting Thermal Stress: Resin Choice and Cure Checks
Compare rigid and flexible epoxy, read CTE and Shore hardness correctly, and use a qualification checklist before approving a PCB potting material.
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PCB Solder Mask Thickness: Measurement and Acceptance Checks
Separate solder mask thickness from clearance, read a real WCSP limit, and use a measurement checklist to agree PCB coating requirements before fabrication.