EMI noise absorber pads
ELECTROMAGNETIC RADIO WAVE ABSORBERS

Radio frequencies emanating from electronic components such as the printed circuit board sketch at the left are addressed in three ways: sometimes no shielding is required; a reflective shield in the form of a local cover for the components, or the entire electronic enclosure can be fitted up as a shield using an absorber pad shield which soaks up the RF and converts it to imperceptible heat energy.

The latter Absorber Shield method deals with the unwanted RF energy right at the source and prevents re-radiation and reflection of the signals so that neighboring components are unaffected; also, second, third and fourth order harmonics are nullified or greatly minimized.

EMC WAVE ABSORBER
40 MHZ TO 5 GHZ

The EA series is a high frequency noise absorber in a range of formulations addressing 40MHz to 5GHz radiations from electronic components. It has a multi-layered structure of screened coating matrixes adjusted for discrete impedance matching to absorb electromagnetic waves at various peak frequencies depending on which of the seven different constructions is used.

Applications:
PCB’s, PCB components, electronic enclosures, shielded boxes, all microprocessor based electronics, EDP, telecom, scientific, medical, architectural shielding, RF test chambers, shielded facilities

EXTRA WIDEBAND SERIES
40 MHZ TO 5 GHZ @ 3.2 GHZ PEAK

This all-around universal wideband formula is available in a standard temperature type and a high temperature type (up to 200˚C). Excellent performance from 40MHz to 5GHz.

*Available in standard rolls 8.25” 210mm x 65’-0” 20M

TYPICAL ABSORPTION RATE


click on graph for larger image

SHIELDING PATCHES®

FOR PCB COMPONENTS AND WIRE CIRCUITS. A quick and easy way to gain 1 to 2 dB without invasive circuit changes. The EA3200H RF absorber matrix provides a measurable effect from 40MHz to 5GHz depending on frequency, existing circuit load, and area covered by the patch®. Peak performance is at 3.2GHz to 5.0GHz.

Installs simply by removing protective adhesive liner. Convenient 6.00” x 8.00” (152 x 203mm) sheets with (24) patches per sheet.

* "H" signifies high temperature version. See specifications above.
STANDARD SERIES: 50 MHZ TO 1 GHZ

*Available in standard rolls 15.75 400mm x 65’-0” 20M
TYPICAL ABSORPTION RATE BY PART NUMBER

The following data displays the inserion loss characteristics of each formula of absorber material by part number. Of particular interest in engineering a given application is the peak absorption frequency and its correlation to the part number nomenclature; i.e., the peak frequency of the EA300 material is 300MHz. Of course, any of the formulations can be used for neighboring frequencies – in the case of EA300, a logical selection can be made for 200MHz or 400MHz situations.

Note that laminations of multiple part numbers will effectively yield a combination of results.

EMC STANDARD SERIES: TYPICAL ABSORPTION RATE BY PART NUMBER

click on graph for larger image
All dimensions in inches millimeters ±1.6%, or ±0.005" 0,13 mm minimum

Microwave Noise Absorber Pads >>
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