Model: SAA-500M18G-20DB-SFF        


PMI Model No. SAA-500M18G-20DB-SFF is a switch bit attenuator that operates over the frequency range of 500MHz to 18GHz.  This model provides 20dB of attenuation when a TTL "0" is applied and less than 3dB of insertion loss when TTL "1" is applied.  This attenuator switches between states in less than 100nsec and maintains a maximum VSWR of 2.0:1 into a 50 ohm impedance.  ±5VDC is required to power the attenuator and it is supplied in a housing measuring 1.0" x 0.7" x 0.35".  Other frequency ranges and attenuation values are available.

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Product Feature

Test Report

Unit Data




Frequency Range 500MHz to 18GHz
Attenuation 20dB ± 2.75dB nominal
Insertion Loss 3.0dB max.
Switching Speed 100nsec max.
TTL Control

"1" = Insertion Loss

"0" = 20dB Attenuation

VSWR 2.0:1 max.
Input Power +20dBm CW max.
DC Supply +5V, 40mA typ. & -5V, 40mA typ.
Connectors SMA (F)
Size 1.0" x 0.70" x 0.35"
Finish Painted Gray

Environmental Ratings:

Temperature:  -20ºC to +70 ºC Operating
 -65 ºC to +125 ºC Non-Operating
 Humidity:  MIL-STD-202F, Method 103B Cond. B
 Shock:  MIL-STD-202F, Method 213B Cond. B
 Vibration:  MIL-STD-202F, Method 204D Cond. B
 Altitude:  MIL-STD-202F, Method 105C Cond. B
 Temperature Cycle:  MIL-STD-202F, Method 107D Cond. A