Gun Test Of A USB3 Host Controller Board

- Sep 01, 2018-

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FR4 printed circuit board (PCB)

 

Classic composite PCB of glassfiber and expoxy resin, available in various compounds, versions (single-/multilayer) and thickness (0.3-3.5mm)

 

Designation

Material

Note

FR4 Standard

Epoxy + glass fabrics

Tg=130-140C, RoHS/WEEE compliant

FR4 non-halogen

Epoxy + glass fabrics

Tg>150, CAF-resistant

FR4 mid Tg

Epoxy + glass fabrics

Tg: 140-160C, increased thermal stability, low elongation in z-axis, high steadiness at lead-free soldering, often CAF-resistant.

FR4 high Tg

Epoxy + glass fabrics

Tg: 160-190C, increased thermal stability, low elongation in z-axis, high steadiness at lead-free soldering, often CAF-resistant.