Rogers Material

FR-4 vs. Rogers PCB Material

For some designs, dielectric PCB properties are critical

Whether it's high-speed designs, RF, microwave, or mobile applications - where power management is key, you're finding more situations that require dielectric PCB properties in your prototypes that standard FR-4 just can't deliver. We know that. That's why we've added Rogers 4000-series dielectric materials to our PCBExpress Quickturn product line. These new low-loss dielectric materials mean greater performance for your high-demand PCB prototypes.

Why Rogers Dielectric Material?

FR-4 material provides the base standard for PCB substrates, delivering a widely effective balance between cost, manufacturability, electrical properties, durability and performance.

But when electrical properties and performance are critical to your designs, Rogers 4350 delivers:

  • Lower Dielectric loss
  • Low signal loss
  • Low cost circuit fabrication
  • Suitable for quick-turn prototyping applications

Now Sunstone Circuits can deliver your RF and mobile designs with the same industry-leading lead times, quality, and extreme customer support you've come to expect from all our services, only now with better low-loss dielectric PCB properties. (Limited to 0.020” dielectric thickness with half ounce copper weight.)


Dielectric Materials
A dielectric material is a substance that is a poor conductor of electricity, and used as an insulating layer in the PCB build up. Porcelain, mica, glass, plastics and some metal oxides are good dielectrics. The lower the dielectric loss, (the proportion of energy lost as heat) the more effective the dielectric material. If the voltage across a dielectric material becomes too great -- that is, if the electrostatic field becomes too intense -- the material will suddenly begin to conduct current. This phenomenon is called dielectric breakdown. Rogers 4350 is less likely to demonstrate a dielectric breakdown condition than FR-4.

Pre-impregnated (Pre-preg)
Contraction of 'pre-impregnated composite fibers', and in the manufacture of PCBs, pre-pregs help influence the performance characteristics of the printed circuit board.

A term also used in the PCB fabrication industry to describe the bonding ply materials used to bond the layers of a multilayer PCB together.

You can get more information on all of Rogers' laminate products here, in the Rogers High Frequency Laminates Product Selector Guide

Rogers Material Quote

If your next project requires dielectric PCB properties, our Rogers material Prototype service is just what you need.

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