THE MT50 absorber: PERFECT FOR MIL-STD461 TESTING

EMC testing without the need for ferrite tiles.

Broadband / Closed-cell polystyrene / 80MHz to 40GHz range

MT50 absorber overview

Cost effective, durable and highly efficient

Building a semi-anechoic chamber for MIL-STD461 EMC testing applications is usually quite an expensive proposition. The investment cost is often driven by the hybrid (cascade) design of the anechoic chambers, making use of a ferrite tile base layer with a hybrid EMC absorber on top.
Ferrite tiles are expensive and often needed to meet the required absorber reflectivity requirements at low frequencies, described in the EMC standard MIL-STD461.
Not so with the DMAS MIL-STD461 absorber (MT50). This polystyrene absorber offers the enormous benefit of meeting absorption (reflectivity) requirements part of MIL-STD461 guidelines, even when no ferrite tile base is utilized.
This means that not only does this DMAS RF absorber offer the usual advantages of closed-cell polystyrene when it comes to its durability and clean room compatibility, it is also much cheaper to use and trivially easy to install due to the absence of ferrite tiles and adhesives. EM absorbers from DMAS are installed using of mounting strips and screws, simple as that.

MIL-STD461 compliant

80MHz – 40GHz range

REACH & ROHS

Easy installation

25 year warranty

Humidity resistant

Environmentally friendly

DMAS: sustainable, long lasting

Thanks to next-gen material properties, DMAS MIL-STD461 absorbers (MT50) are long lasting, fire retardant and resistant to changes in humidity. They are also REACH and RoHS compliant since these characteristics are achieved without relying on potentially hazardous materials during fabrication. In addition, the modular design makes it easy to replace a damaged taper without having to throw out an entire absorber. If you are looking for the most sustainable option, choose DMAS polystyrene absorbers.

MT50 Absorber

Technical details

Closed-cell polystyrene material (no leakage of carbon particles)
Uniform carbon cell loading resulting in stable performance
Modular baseplate & taper design (damaged tapers are easily replaced)
Straightforward installation using screws and mounting strips (no glue)
Lightweight product with superior tensile strength (no drooping tips)
Resistant to humidity (does not absorb moisture from the air)
Environmentally friendly: REACH & RoHS compliant
Certified for use in clean rooms

Fire retardancy: ISO 11925-2 Class E / DIN 4102 class B2 / UL94 HBF
Total absorber dimension: 1200 by 600 by 500mm (LxWxH)
Meets MIL-STD461 reflectivity requirement [-6 dB at 80 MHz / -10dB at ≥250MHz]
Cost effective since no ferrite tiles are required
Can be equipped with a white end cap to protect tapers and increase chamber illumination
A product life expectancy upwards of 25 years

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Cost effective

No need for ferrite tiles

The incredible durability and closed-cell nature are compelling reasons to choose DMAS RF absorbers, but the MT50 absorber offers additional benefits. It meets MIL461 reflectivity loss requirements without the need for ferrite tiles, making it significantly cheaper and easier to install than traditional hybrid absorber solutions.

Finishing touch

White & grey end caps

The MT50 absorber can be equipped with a lightweight end cap. These end caps serve to protect the taper against small forms of damage. They are available in a white and grey finish. As an added benefit, the white end caps also enhance light levels within the anechoic chamber, making it easier for engineers to work.

Contact DMAS

Learn more about DMAS absorbers

Looking for the very best in microwave absorber technology? DMAS absorbers are designed for modern EMC testing facilities and represent the latest in sustainability & performance. Contact us today to get started.