HCM Series RF Variable Attenuator by Smiths Interconnect
The HCM Series from Smiths Interconnect are Temperature Variable Attenuators that operate from DC to 12.4 GHz. They provide attenuation from 0 to 10 dB with a step size of 1 dB and can handle a CW input power of up to 200 mW. These fixed chip attenuators have a VSWR of less than 1.30:1 and have a range of temperature coefficient of attenuation values from -0.009 to -0.003 dB/dB/°C. They contain both fixed and thermopad attenuators in the same footprint that gives the ultimate design flexibility to tailor the response over variations in temperature. These attenuators can be used in place of a standard chip attenuator to combine level setting or buffering and temperature compensation in a single chip design.
The HCM Series offers a totally passive solution in a solderable surface mount package with tape and reel or serialized waffle pack and are ideal for satellite communications, power amplifiers, up and down converters, transmitters and receivers, isolators/circulators, instrumentation, mixers, and directional couplers.
Product Details
- Part Number: HCM Series
- Manufacturer: Smiths Interconnect
- Description: 10 dB Temperature Variable Attenuators from DC to 12.4 GHz
General Parameters
- Type: Temperature Variable
- Applications: Directional Couplers, Instrumentation, Mixers, Power Amplifier, SATCOM, Transmit/Receive Module, Up/Down Converters
- Frequency: DC to 12.4 GHz
- Attenuation Range: 0 to 10 dB
- Step Size: 1 dB
- Attenuation Accuracy: ± 0.5 dB
- Power: 0.2 W
- Peak Power: 1 W
- Impedance: 50 Ohms
- VSWR: 1.25:1, 1.35:1, 1.50:1
- Resistor Film: Thin film, Thermistor
- Substrate: Alumina
- Package Type: Surface Mount
- Temperature Coefficient of Attenuation (dB/dB/C): -0.003, -0.004, -0.005, -0.006, -0.007, and -0.009 dB/dB/ºC
- Temperature Coefficient Tolerance (dB/dB/C): ±0.001 dB/dB/°C
- Operating Temperature: -55 to 150 Degree C
- Storage Temperature: -65 to 150 Degree C
- Note: Substrate Material :Alumina (AI2O3) 96% ; Terminal Material :Thick film Nickel Barrier, Solder Coated (Sn60/Pb40); Protective Coating :Polymer ; Moisture Sensitivity Level: MSL-1
Courtesy of everything RF
