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Temperature Variable Attenuators

Thermopad® products are a totally passive, easy to implement solution for gain compensation designed specifically for demanding high reliability applications. 

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Features & Benefits

Smiths Interconnect is the world leader in temperature variable attenuators from DC through Ka Band, featuring our patented Thermopad line of products which compensate for gain variation over temperature. The Thermopad® (Patent # 5,332,981) is a totally passive, surface mountable temperature variable attenuator. It requires no bias or control voltages and does not generate distortion. The Thermopad can be used in place of a standard chip attenuator to combine level setting or buffering and temperature compensation in a single chip design. This will reduce component count, increase reliability, and lower costs. Applications include power amplifiers, mixers, MMIC amplifiers, directional couplers and diode detectors. 
  • Frequency Range from DC to 36 GHz 
  • Attenuation Values from 1 to 10dB 
  • Wire Bondable Connections Available 
  • Negative & Positive Coefficients of Attenuation Available 
  • Tape and Reel Packaging Available 
  • Space and Military Qualified 
  • Impedance 50 and 75 Ohms 
  • RoHS Compliant Option Available 


TVA Offerings

Smiths Interconnect Thermopad® ( Temperature Variable Attenuator) Offering
Thermopad® Product Series Fixed Attenuator Equivalent Frequency Range  Max  Input Power CW  Footprint Dimensions (Inches) Footprint Dimensions (mm)
TVA TS03 DC-12.4 GHz 2.0 Watts 0.122 X 0.145 3.10 X 3.68
MTVA TS05 DC-18 GHz 200 Milliwatts 0.075 X 0.060 1.91 X 1.52
WTVA TS09 or TT9 DC-20 GHz 200 Milliwatts 0.060 X 0.075 1.52 X 1.91
KTVA KFA 16-36 GHz 200 Milliwatts 0.120 X 0.065 3.05 X 1.65 
K2TVA Not Available

17-22 GHz
27-32 GHz

200 Milliwatts See
See Brochure 
AN5 AT5 DC-6 GHz 200 Millwatts 0.075 X 0.060 1.91 x 1.52
AN7 AT7 DC-6 GHz 100 Milliwatts 0.080 X 0.050 2.03 X 1.27

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