Blog
PCB FR4 Material Guide: Properties, Stackup and Quote Checks
Choose PCB FR4 material by matching Tg, Dk, Df, thickness, copper and application risk to the actual board requirement.
Blog
FR4 Material Dielectric Constant: Dk Values and PCB Design Checks
Understand FR4 dielectric constant, why Dk is not one fixed value, and how to use it in stackup, impedance and material decisions.
Blog
FR4 Datasheet Guide: Tg, Dk, Df and PCB Material Checks
Learn how to read an FR4 datasheet for PCB quotation, including Tg, Dk, Df, CTE, CTI, thickness and material substitution checks.
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Density of FR4 Material: PCB Weight Values and Quote Checks
Learn how FR4 material density affects PCB weight estimates, shipping, enclosure fit and quote checks for rigid circuit boards.
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FR4 PCB Material: Tg, Thickness, Copper and DFM Selection Checks
Learn what FR4 PCB material is, how Tg, thickness, copper, dielectric properties and DFM limits affect fabrication, cost and reliability.
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PCB Solder Mask: Purpose, Colors, Openings and DFM Checks
Learn what PCB solder mask does, how solder mask openings, colors, clearance, thickness and DFM checks affect fabrication, assembly and reliability.
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PCB Surface Finish Types: HASL, ENIG, OSP and When to Choose
Compare PCB surface finish types including HASL, lead-free HASL, ENIG, OSP, immersion silver and immersion tin, with solderability, cost and DFM checks.
Blog
PCB Via Types: Through, Blind, Buried, Microvia and Via-in-Pad
Learn the main PCB via types, how through vias, blind vias, buried vias, microvias and via-in-pad differ, and what to check before fabrication.
Blog
4 Layer PCB Stackup: Signal, Ground, Power and DFM Checks
Learn a practical 4 layer PCB stackup, when to use signal-ground-power-signal layers, what to check for impedance, copper balance, vias and fabrication.
Blog
Circuit Card Assembly Testing: AOI, X-Ray, ICT, FCT and Coverage Gaps
Learn circuit card assembly testing methods, what AOI, X-ray, ICT, flying probe and FCT can catch, what they miss, and what files to send before PCBA production.