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Suppress Interference at the Source. Restore Signal Integrity.
Today’s electronic and RF systems operate at higher frequencies and in increasingly compact form factors. As components move closer together, cavity resonances, unwanted emissions, surface-wave coupling, and localized heat buildup can degrade performance, reliability, and signal integrity. MAST Technologies engineers absorber materials that solve these challenges at the source.
1–100
GHz Tunable Range
9
Engineered Materials
PSA
Drop-In Integration
>10kΩ
Surface Wave Resistance
Absorber Solutions for EMI & RF Control
The Right Material for Every EMI Challenge
MAST Technologies offers a complete portfolio of EMI and RF absorber materials engineered to solve interference wherever it occurs. From cavity resonance and tuned-frequency absorbers tosurface-wave suppression, broadband foams, and dual-function thermal materials, every solution is designed to improve RF performance while simplifying integration.
Whether you’re optimizing a PCB, shielding an enclosure, or solving system-level EMI challenges, MAST helps match the right material to the application.
AVAILABLE ABSORBER SOLUTIONS
Need to strengthen EMI or RF performance in your system?
Custom Tuning Range
1–100
GHz
Source-level, cavity, surface-wave & broadband suppression
Source-Level & Dual-Purpose Materials
One Material. Two Critical Functions.
EMI Suppression. Thermal Management.
SUPPRESS-N-SINK™
Suppress-n-Sink™ 300 Series
Stop EMI at the Source. Dissipate Heat at the Same Time. In One Material.
Suppress-n-Sink™ 300 combines EMI/RF absorption and thermal conductivity into a single engineered material. Designed for direct placement on chips and electronic components, it simultaneously suppresses unwanted electromagnetic energy while transferring heat away from sensitive electronics.
Ideal for compact electronic assemblies where thermal management and EMI control compete for the same space.
ENGINEERED TO
MR Series Sheet Absorbers
Precision Sheet Absorbers Tuned for Every RF Suppression Challenge.
MAST’s elastomeric sheet absorber families address specific RF loss mechanisms across abroad frequency spectrum. Each formulation is optimized for a unique application, from cavityresonance control and tuned-frequency attenuation to PCB surface-wave suppression and low frequency EMI management.
MR21
Cavity Resonance Absorbers
High-loss elastomeric sheet absorbers engineered to reduce cavity resonance, lower enclosureQ-factor, and improve shielding effectiveness inside RF enclosures.
Range 1–40 GHz
MR11
Tuned Frequency Absorbers
Frequency-specific absorber materials engineered to provide targeted attenuation at discretefrequencies. Tunable from 1 to 100 GHz through formulation and thickness.
Range 1–100 GHz
MR31
Surface-Wave Absorbers
High-impedance surface-wave absorbers engineered to suppress PCB trace radiation whilemaintaining signal integrity.
Range 1–40 GHz
MR51
Low-Frequency Absorbers
Magnetically loaded absorbers engineered for high-loss performance at sub-microwavefrequencies where carbon-loaded absorbers are less effective.
Range 500 MHz – 4 GHz
MF Series Foam Absorbers
Broadband Foam Absorbers for Large-Volume RF Suppression
Carbon-loaded foam absorbers engineered to deliver broadband RF attenuation in applications where geometry allows thicker absorber placement. Multiple foam constructions provide performance options for cavities, radomes, enclosures, test systems, and antenna structures.
MF11
Reticulated Foam Absorbers
Continuous-gradient reticulated foam providing broadband attenuation across microwave andmillimeter-wave frequencies.
Ideal for radomes, cavities, antenna systems, and large RF enclosures.
Use Cavities · Housings · Radomes
MF22
Lossy Foam Absorbers
Carbon-loaded lossy foam providing cost-effective broadband attenuation across 1 to 100 GHz.
Range 1–100 GHz
MF32
Convoluted Foam Absorbers
Convoluted foam engineered for broadband attenuation at both normal and grazing angles ofincidence, making it ideal for test chambers and RF enclosures.
Use Test Boxes · Antenna Cavities
Compounds, Caulks & Inks
Dispensable EMI/RF Compounds for Prototype Through Production
MC10 Series compounds provide electrically equivalent absorber performance in dispensable,castable, and coatable formats. Designed for automated manufacturing, complex geometries,and applications where sheet materials cannot be used.
MC10
Magnetically Loaded Absorber Compounds
Magnetically loaded absorber compounds engineered for dispensing, casting, or coating onto complex electronic assemblies. Ideal for prototype development, irregular geometries, automated production, and custom absorber applications.
Technical References & Resources
The Performance Data Your Engineering Team Needs to Specify & Validate
MAST Technical Bulletins provide measurement methodologies, material selection guidance, application engineering insight, and performance data to help engineers specify, validate, and integrate RF absorber materials with confidence.
Partner With MAST Technologies
Cleaner Signals.
Better Shielding.
Engineered for Real-World RF Performance.
MAST Technologies develops absorber materials that solve interference where it begins, improving signal integrity, shielding performance, and overall system reliability across electronic and RF platforms.
Need Help Selecting the Right EMI Material?
Our engineering team will help identify, specify, and validate the best absorber material for your application, whether you’re solving cavity resonance, PCB emissions, enclosure interference, thermal management, or system-level RF challenges.
WHY ENGINEERS CHOOSE MAST FOR EMI & RF
Source-Level Suppression
Suppress Interference at the Source
Absorbers target interference at its origin, including chips, PCB traces, RF cavities, and enclosure surfaces, before it impacts system performance.
Tunable 1–100 GHz
Custom Tuned Across 1-77 GHz
Frequency-specific materials engineered to solve the exact interference problem rather thanrelying on broadband compromise.
Drop-In Integration
Simple System Integration
PSA-backed formats, sheet materials, foams, and compounds designed to integrate easily intoexisting products.
In-House Testing & Data
Validated Performance
Every material is backed by AS9100D-certified testing, including VNA measurements, resistivity testing, and complete manufacturing traceability.
