A high-performance open cell pyramidal RF absorber for medium power applications.
PPG C-RAM® EVA is a series of very high performance pyramidal RF absorbers capable of handling relatively high power densities. It is a very open cell, porous material, and is used in anechoic chambers to cover air ducts, thereby reducing RF reflections, without substantially reducing air flow.
PPG C-RAM® EVA is available in versions 4, 6, 8, 12, 18, 24, and 36 inches tall, corresponding in performance and geometry to the equivalent grade of PPG C-RAM SFC.
PPG C-RAM EVA is available in standard base dimensions of 24 in. x 24 in. (610 x 610 mm). However, custom sizes can be made to accommodate existing air ducts.
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PPG C-RAM EVA is made from light, open cell foam with large cell size of 15 pores/inch. The large open cells permit forced air circulation through the material, increasing the power handling capabilities. Without forced air cooling, the material can typically handle 2 W/in2.
PPG C-RAM EVA is dimensionally equivalent to the corresponding grades of PPG C-RAM SFC. The reflectivity characteristics are similar to those of PPG C-RAM SFC.
PPG C-RAM EVA is a very resilient foam. It stands up well to mechanical abuse and tolerates repeated deformation without tearing.
Service temperature
- 180°F
Shelf life
- 5 yrs. Minimum