Megtron 6 vs Rogers 4350B for RF and High-Speed Designs

Q: Is Megtron 6 good enough for RF?

Megtron 6 works well for many high-speed digital and lower-frequency RF designs. For phase-sensitive microwave and mmWave work, Rogers 4350B or PTFE laminates are preferred for their tighter Dk stability.

Q: Can I use both materials in one board?

Yes. Mixed-dielectric stackups combine Rogers RF layers with Megtron 6 or FR-4 for the rest of the board. We stock both materials.

Megtron 6 vs Rogers 4350B for RF and High-Speed Designs

A practical comparison of Megtron 6 and Rogers 4350B: dielectric constant, loss tangent, cost and when to choose each for RF and high-speed boards.

Quick answer

Choose Rogers 4350B for RF and microwave designs needing tight Dk stability and the lowest loss. Choose Megtron 6 for high-speed digital (56–112G) where you need low loss at lower cost and better multilayer processability. Many designs use both in a mixed-dielectric stackup.

Dielectric constant and loss

Rogers 4350B offers very stable Dk (~3.48) with low loss tangent, ideal for phase-sensitive RF. Megtron 6 has slightly higher loss than Rogers but far lower than standard FR-4, and laminates well into thick multilayer stackups.

Cost and processability

Megtron 6 is more cost-effective and easier to build into high-layer-count boards. Rogers is the choice when RF performance is non-negotiable.

When to mix

Hybrid stackups place Rogers on the RF layers and Megtron 6 or FR-4 elsewhere, balancing performance and cost. We stock both.

FAQ

Is Megtron 6 good enough for RF?

Can I use both materials in one board?

Related capability: RF / High-Frequency PCB