Blog
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.
Blog
PCB Z-Axis CTE: Tg, Expansion and Via Reliability Checks
Read PCB Z-axis CTE correctly, compare Tg and expansion data, and use a practical checklist for laminate selection, via qualification and supplier review.
Blog
PCB Glass Weave Effect: Skew, Routing and Stackup Checks
Understand PCB glass weave skew, compare spread glass with angled routing, and use a stackup checklist to confirm material construction before fabrication.
Blog
PCB Copper Roughness: Foil Types, Loss and Stackup Checks
Compare PCB copper foil options, read RO4350B LoPro parameters, and use a practical roughness and loss checklist before approving your RF stackup.
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FR4 PCB Material: Properties, Grades, and What to Specify
FR4 is a glass-epoxy PCB material category, not a complete board specification. This guide explains the material forms, the properties that change a selection decision, and the details to agree on before fabrication.
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What Is a PCB BOM? Required Fields, Examples, and Common Errors
A PCB BOM connects component choices to purchasing and assembly. This guide explains the essential fields, uses a small example to separate fitted quantities from procurement needs, and shows how to check DNP status, part identities, and release consistency.
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PCB Ionic Contamination Testing: ROSE vs IC and SIR
Compare ROSE, ion chromatography and SIR for PCB cleanliness. Check sample area, equipment fit and report evidence before accepting a production lot.
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Conformal Coating Masking: Keep-Outs, Materials and Removal Checks
Plan PCB coating keep-outs, compare tape vs boots vs peelable masks, check Chemask HV data, and use a practical masking-removal inspection checklist.
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PCB Potting Bubbles: Causes, Vacuum Degassing and Checks
Find why PCB potting bubbles form, compare degassing with vacuum potting, and use a resin-parameter example and trial checklist before production.
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Press Fit PCB Holes: Finished Sizes, Plating and Assembly Checks
Specify press-fit PCB holes using connector drawings, finished-hole tolerances and plating checks. Use a release checklist before assembly.