Rogers PCB Material Sourcing in China
1 resources tagged with "Rogers"
Rogers laminates — most commonly 4003C and 4350B — are the go-to high-frequency substrates for RF, radar, and mmWave boards where FR4's loss tangent is too high. Chinese fabs can run Rogers, but it carries a 4–10x material cost multiplier over FR4 and demands tighter process control, so a shop's experience matters more than its quote. The frequent failure mode is a fab quietly substituting a cheaper PTFE or 'Rogers-equivalent' laminate, which shifts dielectric constant (Dk) and detunes your matched RF lines.
Sourcing a Rogers board means specifying the exact laminate part number and verifying the fab actually used it, since Dk and Df directly affect RF performance. We check incoming material certs and, on critical jobs, request a cross-section or material trace.
Wiki (1)
FAQ
Why does a Rogers PCB cost so much more than FR4?
Rogers laminates like 4003C and 4350B carry a 4–10x material cost premium over FR4, plus they need tighter lamination and drilling control. The payoff is a stable, low-loss dielectric constant needed above roughly 2–3 GHz.
How do I stop a Chinese fab from substituting the laminate?
Specify the exact Rogers part number on the fab drawing, require material certificates of conformance, and for RF-critical boards ask for a cross-section report. Substitution with a cheaper PTFE shifts Dk and detunes RF matching.
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