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Wide-Band Thermopads® SMT Series

EMC Technology introduces a new wideband surface mount temperature variable attenuator optimized for performance from DC to 20 GHz. Using EMC’s patented Thermopad® technology, the WTVA offers the best performance to date for high frequency applications including optimal temperature coefficients of attenuation (TCA) at frequencies from 12.4 GHz up to 20 GHz. They WTVA wide band temperature variable attenuator is available in a RoHS compliant solder finish with dB values from 2 to 6 dB and negative coefficients slopes from 0.003 to 0.006.

WTVA-SMTF Specification Sheet

Surface Mount WTVA (SMTF) Packaging Specifications
WTVA-SMT Specification Sheet


Size 1.52mm x 1.91mm [0.060in x 0.075in]
Impedance 50 Ohms
Frequency Range DC to 20 Ghz
TCA Tolerance ±0.001 dB/dB/°C
VSWR (Typical) 1.25:1 Max DC-10 GHz @ 25°C
1.70:1 Max 10-20 GHz @ 25
Power Rating 200 Milliwatts
Operating Temperature -55°C to 150°C
Substrate Alumina
Resistive Material Thick Film
Terminal Material Thick Film, Wire Bondable or Lead Free Finish