3680 series Nonflammable high power handing absorbers

Nonflammable high power handing EM absorbers for anechoic chambers

Nonflammable high power handing absorber, is a non-woven fabrics based hollow broadband microwave absorbers with fire retardant and microwave absorption impregnated.

It is mainly used in microwave anechoic chambers, and it can be used to shield the test equipments inside the chamber; under vertical incidence and oblique incidence conditions, it has better broadband performance; meanwhile, it has a good scattering attenuation and isolation performance, and it can be applied for all parts of the anechoic chambers.

It is a hollow broadband microwave absorber which is made of a heat resistance non-woven fabric which is dipped with flame retardants and microwave absorbing agents, and it is mainly used in microwave anechoic chamber and covers the test equipments. Under the condition of normal incidence and oblique incidence, it has better broadband performance as well as scattering and isolation attenuation performance; it can be used in any part of the chamber.

3680-300 (300 mm height Nonflammable high power handling absorbers)
3680-300 (300 mm height Nonflammable high power handling absorbers)

Characteristics

  • Good flame retardant characteristics, it won’t burn when it encounter the fire, it has oxygen index ≥60% and flame retardant B1 level.
  • Excellent high power handing capacity, it can withstand the power irradiation (continuous wave) ≥6kW/m2
  • It adopts keel mounting method, without any adhesive.
  • The absorbing performance of such absorbers is equal to or better than the PU foam absorber with same height.
  • It adopts inorganic flame retardants and microwave absorption, no volatile, no smell and non-toxic; it is stable in long-term use.
  • Working conditions:
    • Long-time working temperature: -50°C ~ 120°C
      Short-time working temperature: -100°C ~ 150°C
    • Relative humidity: 55% ± 15%

Schematic diagram of high power handing nonflammable pyramid absorber

Schematic diagram of nonflammable pyramid absorber
Schematic diagram of nonflammable pyramid absorber

Product specification and part numbers

Part number Base size (mm*mm) Pyramid quantity per unit Unit size A*C*B (mm*mm*mm) Standard weight
(kg/m2)
3680-190 500×500


81 190×65×50 10
3680-300 64 300×60×50 13
3680-500 64 500×60×76 19
3680-690 36 690×80×90 20
3680-1000 16 1000×123×160 26
3680-1200 9 1200×163×180 28
3680-1500 9 1500×163×205 29
3680-1600 9 1600×163×220 40

Reflection loss / Shielding performance

These values are measured under laboratory conditions.
In your situation results may differ, please read our Guarantee
Part number Reflection loss under vertical incidence (-dB @ GHz) Power handing
capacity kW/m2
0.03 0.08 0.3 0.5 1 3 6 10 18 40 100
3680-190         27 35 40 45 50 50 45 3
3680-300       25 35 40 50 50 50 50 45 3
3680-500     20 30 40 45 50 50 50 50 45 4
3680-690   8 25 35 40 50 50 50 50 50 45 5
3680-1000   11 30 40 45 50 50 50 50 50 45 5
3680-1200 5 13 35 40 45 50 50 50 50 50 45 6
3680-1500 11 14 35 40 50 50 50 50 50 50 45 6
3680-1600 14 16 35 45 50 50 50 50 50 50 45 6

Please note:

  • For the data below 500MHz, it is obtained by low-frequency coaxial test method (GJB5239-2004); while for the data above 1GHz, it is obtained by far-field RCS test method (GJB2038A-2011)
  • The performance data listed in the above table is the guaranteed data, and the measured data would be equal to or better than the guaranteed data.
  • 3680-1600 can also be used in EMC chambers such as 10 meters and 3 meters.
  • The bold part number is a stock item and can be delivered immediately
  • Certification: CE ROHS
Holland Shielding Systems B.V. Holland Shielding Systems B.V.
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Product description:

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Series
Height (mm)
Specify the height of the desired absorber in mm
* Note: The red blocks are required

1150

Thermal pads

8005

Durchführungsfilter

Anechoic chambers

2700

Contact fingers

8004

Power line filters for shielded cabinet

1900

EMI-Gehäuse