Trilithic

Rotary Step Attenuators

Rotary Step Attenuators

  • Wide Frequency Range
  • High Accuracy Rate
  • Low VSWR
  • Price Competitive
  • Flexible Design Configurations

Trilithic's RSA series rotary attenuators are recognized worldwide as the standard for durable, precise signal level control. The series is divided into both 50 and 75 Ohm units with attenuation as high as 110 dB dynamic range (in 10 dB steps), or as low as 1 dB range (in 0.1 dB steps). A firm, snap action detent locks in the desired attenuation as indicated on the supplied control knob. Low VSWR and insertion loss is assured throughout the range of each unit with tightly controlled pad values and machining tolerances.

Trilithic's new state-of-the-art rotary step attenuators are designed for precision control of signal levels in the DC to 3.0 GHz range and are offered in a wide choice of values and increments. This new design allows for greater automation of assembly and unprecedented low cost. Please contact the factory for your custom attenuator needs.

Reliability Metrics

Mean Time Between Failure (MTBF) 1.09 x 106 hours
Mean Time to Repair (MTTR) 10 hours
Inherent Availability (Ai) 99.9%

Specifications

Model RSA-3501 RSA-3510 RSA-35100
Frequency Range
DC to 1GHz
DC to 3 GHz
DC to 3 GHz
Impedance
50 Ohms
50 Ohms
50 Ohms
Attenuation
0 - 1 by .1 db
0 - 10 by 1 dB
0 - 100 by 10 dB
Average Power
2 Watts (25° C)
2 Watts (25° C)
2 Watts (25° C)
Switching Life
200,000 Steps Minimum
200,000 Steps Minimum
200,000 Steps Minimum
Rotation
Clockwise for increasing
attenuation in 30 degree indexing
Clockwise for increasing
attenuation in 30 degree indexing
Clockwise for increasing
attenuation in 30 degree indexing
Connectors
Female: SMA, BNC, TNC, N
Female: SMA, BNC, TNC, N
(BNC not recommended above 1 GHz)
Female: SMA, BNC, TNC, N
(BNC not recommended above 1 GHz)
Housing
Aluminum and Zinc
Aluminum and Zinc
Aluminum and Zinc
Knobs
Knobs are included
with every attenuator
Knobs are included
with every attenuator
Knobs are included
with every attenuator
Insertion Loss
DC - 1.0 GHz 0.9 dB max
DC - 1.0 GHz 0.3 dB max
1.0 - 2.0 GHz 0.5 dB max
2.0 - 3.0 GHz 0.7 db max
DC - 1.0 GHz 0.25 dB max
1.0 - 2.0 GHz 0.50 dB max
2.0 - 3.0 GHz 0.75 dB max
Accuracy
DC - 1.0 GHz ±0.05 dB
DC - 1.0 GHz ±0.25 dB
1.0 - 2.0 GHz ±0.35 dB
2.0 - 3.0 GHz ±0.50 dB
DC - 1.0 GHz ±0.25 dB or 1.5%¹
1.0 - 2.0 GHz ±0.35 dB or 2%¹
2.0 - 3.0 GHz ±0.50 dB or 3%¹ ²
¹ Whichever is greater
²100dB 6.0%
VSWR / Return Loss
Frequency Range VSWR
DC - 1.0 GHz 1.25:1 max
19.1 dB max
Frequency Range VSWR
DC - 1.0 GHz 1.25:1 max
19.1 dB max
 
1.0 - 2.0 GHz 1.35:1 max
16.5 dB max
 
2.0 - 3.0 GHz 1.50:1 max
14.0 dB max
Frequency Range VSWR
DC - 1.0 GHz 1.25:1 max
19.1 dB max
 
1.0 - 2.0 GHz 1.35:1 max
16.5 dB max
 
2.0 - 3.0 GHz 1.50:1 max
14.0 dB max
Think Ahead.
Copyright © 2010 Trilithic, Inc. All Rights Reserved
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Request a Quote

  • Request a Quote
    50 ohm Manual Variable Attenuator RSA-3501-R
    2 Watt DC-1GHz 50 ohm manual variable attenuator with SMA connector(s), 0-1 dB in 0.1 dB steps.
  • Request a Quote
    50 ohm Manual Variable Attenuator RSA-3510-R
    2 Watt DC-3GHz 50 ohm manual variable attenutator with SMA connector(s), 0-10 dB in 1 dB steps.
  • Request a Quote
    50 ohm Manual Variable Attenuator RSA-35100-R
    2 Watt DC-3GHz 50 ohm manual variable attenuator with SMA connector(s), 0-100 dB in 10 dB steps.

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