Kerasorb EMI Absorber - MH&W International Corp.

Kerasorb^® EMI Absorber

MH&W International is proud to offer Kerafol’s Kerasorb^® hybrid EMI-absorbing gap pads—a smart, dual-purpose solution for modern electronics. With thermal conductivity up to 2.5 W/mK and excellent EMI suppression up to 77 GHz, Kerasorb^® efficiently dissipates heat while reducing signal interference, crosstalk, and RFI in high-speed designs like 5G, automotive radar, and consumer devices. This single, electrically insulating silicone pad simplifies assembly, cuts part count, and boosts system reliability. Contact MH&W to see how Kerasorb^® can enhance your next project.

Superior EMI Suppression

Kerasorb^® delivers exceptional electromagnetic interference attenuation (≥40 dB), effectively absorbing unwanted signals, resonances, and surface currents to minimize crosstalk and RFI in high-frequency applications up to 77 GHz.

Good Thermal Conductivity

Engineered with advanced fillers for thermal performance up to 2.5 W/mK (in the 2500 variant), Kerasorb^® efficiently dissipates heat from sensitive components while maintaining low thermal impedance.

Electrically Insulating Design

Unlike many EMI absorbers, Kerasorb^® remains fully electrically insulating with high dielectric breakdown voltage (5 kV), preventing short circuits and ensuring safe integration between heat sources and sinks.

Frequency-Independent EMI

Electromagnetic absorption properties stay consistent regardless of pad thickness, providing reliable high-frequency shielding even in ultra-thin bond line applications.

Soft & Compliant Structure

The silicone-based elastomer is soft and elastic (low Shore hardness), offering excellent surface compliance to fill microscopic gaps, reduce contact resistance, and accommodate component tolerances.

All-in-One Hybrid Solution

Combines thermal interface, electrical insulation, and EMI absorption in a single pad—simplifying design, reducing part count, easing assembly, and enhancing reliability in 5G, automotive radar, and advanced electronics.

Kerasorb^® Comparison Chart

Product Grade	Thermal Conductivity (W/mK)	Measured Thickness (mm)	Measured Freq (GHz).	Breakdown Voltage (kV)	Hardness (Shore 00)	Application Temp (°C)	Color	Datasheet
Kerasorb^® 1500	1.5	1.0	45 & 77 GHz	>5.0	30-45	-40 to +160	Orange	PDF
Kerasorb^® 2500	2.5	1.0	45 & 77 GHz	>5.0	35-50	-40 to +160	Mint	PDF

Frequently Asked Questions

What is Kerasorb^® and what makes it unique?

Kerasorb^® is an innovative hybrid material that combines the functions of a high-performance thermal gap pad with powerful EMI absorption in a single silicone-based elastomer pad. Unlike traditional TIMs or separate EMI absorbers, it provides excellent thermal conductivity (up to 2.5 W/mK in the 2500 variant), electrical insulation, and strong EMI suppression (≥40 dB) at high frequencies up to 77 GHz—all while remaining electrically insulating to prevent short circuits.

In which applications is Kerasorb^® most commonly used?

Kerasorb^® is ideal for high-frequency, high-speed electronics where both heat dissipation and EMI mitigation are critical. Common uses include 5G modules and antennas, automotive radar systems, advanced consumer devices, industrial assemblies, aerospace, and defense applications—anywhere compact designs face signal interference, crosstalk, or RFI challenges alongside thermal management needs.

How does the EMI performance of Kerasorb^® compare to standard gap pads?

Standard gap pads focus only on thermal transfer and insulation, offering no EMI protection. Kerasorb^® adds exceptional electromagnetic absorption that remains effective and consistent (frequency-independent in key ranges) even at thin bond lines, achieving ≥40 dB attenuation up to 77 GHz. This makes it a true all-in-one solution, reducing the need for additional absorbers and simplifying PCB layouts.

Is Kerasorb^® electrically insulating, and what are its key electrical properties?

Yes, unlike many EMI absorbers that may be conductive, Kerasorb^® is fully electrically insulating with a high dielectric breakdown voltage of 5 kV (uncompressed). This ensures safe use between live components and heat sinks without risk of short circuits, while still delivering superior thermal and EMI performance.

As thermal demands rise with miniaturization, MH&W’s Thermal Division provides the expertise and Keratherm^® materials necessary to prevent system failure. Contact our engineers for technical support, request an RFQ, or purchase standard sheets directly from our online shop.