SMA25 Coaxial Attenuator, 25 Watts

SMA25 series coaxial fixed attenuator covers frequency from DC to 26.5GHz and features low VSWR, flatness attenuation value and excellent capacity in anti-pulse and anti-burnout etc..

Coaxial fixed attenuators are used in absorbing energy of transmission line, expanding power range and controlling power level, they are also used in accurately measuring power or spectrum of RF microwave transmitters accompany with small power meter, comprehensive tester or spectrum analyzer.

Key Features

Wide frequency range up to 26.5 GHz

25 W average power and 0.5 kW peak power

Low VSWR and flatness attenuation

50 ohm nominal impedance

Custom designs available for other special attenuation value & accuracy

SMA25-XX-8

•  Frequency range: DC – 8 GHz

•  Max. VSWR: 1.20

•  Attenuation value: 10, 20, 30, 40 dB (refer to XX)

•  Accuracy: ±0.4dB for 10 attenuation, ±0.5dB for 20/30/40 attenuation

SMA25-XX-12.4

•  Frequency range: DC – 12.4 GHz

•  Max. VSWR: 1.25

•  Attenuation value: 10, 20, 30, 40 dB (refer to XX)

•  Accuracy: ±0.5dB for 10 attenuation, ±0.8dB for 20/30/40 attenuation

SMA25-XX-18

•  Frequency range: DC – 18 GHz

•  Max. VSWR: 1.30

•  Attenuation value: 10, 20, 30, 40 dB (refer to XX)

•  Accuracy: ±1.0dB

SMA25-XX-26.5

•  Frequency range: DC – 26.5 GHz

•  Max. VSWR: 1.35

•  Attenuation value: 10, 20, 30, 40 dB (refer to XX)

•  Accuracy: ±1.2dB

Average Power

25W average to 25°C ambient temperature, derated linearly to 2.5W @ 125°C

Peak Power

0.5 kW (5μs pulse width with 5% duty cycle)

Connector Type

•  DC – 8/12.4 GHz: SMA (J,K),  50 ohm

•  DC – 18/26.5 GHz: SMA, 2.92mm,  50 ohm

Connectors

Brass nickel plated

Pin

Male: brass gold plated

Female: beryllium copper gold plated

Housing

Aluminum, Black Anodize

Dimension

Ø63 × 47 mm

Weight

115 g

Temperature Range

-55°C to +125°C

RoHS Complient

Yes

Main Module

Module No. Item Description
SMA25-XX-8 Coaxial Fixed Attenuator DC to 8 GHz, XX refers to the attenuation value which is 10,20,30,40
SMA25-XX-12.4 Coaxial Fixed Attenuator DC to 12.4 GHz, XX refers to the attenuation value which is 10,20,30,40
SMA25-XX-18 Coaxial Fixed Attenuator DC to 18 GHz, XX refers to the attenuation value which is 10,20,30,40
SMA25-XX-26.5 Coaxial Fixed Attenuator DC to 26.5 GHz, XX refers to the attenuation value which is 10,20,30,40

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