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Attenuators, Terminations & Resistors

Spectrum Control is a solution-minded, performance-driven, customer-focused global supplier of a broad portfolio of RF passive components. We have been delivering quality and innovation for decades with products from our well-known Weinschel and Inmet brands. We offer standard and custom solutions for SATCOM, MILCOM, defense, wireless communications infrastructure, DAS integrators, test & measurement, and more.

COAXIAL SOLUTIONS We offer a full line of standard passive coaxial products and custom-engineered solutions to satisfy market needs for precision and high reliability parts. Products include fixed attenuators, terminations, gain equalizers, bias tees, DC blocks, connectors, and high-reliability attenuators.

SMT SOLUTIONS We design and manufacture a broad range of resistive devices for board-level applications using thin- and thick-film technology. These Powerfilm™ brand components are available in chip, leaded, or flange-mount packages and are enhanced to provide reliable performance in a wide range of frequencies.


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A wide selection of Inmet and Weinschel brand fixed attenuators with frequency ranges to 50 GHz (DC) with power handling up to 1000 watts.
Terminations up to 50 GHz. Spectrum Control makes coaxial terminations with a wide selection for frequency type, power handling, and connector type. Custom designs available.
Chip and flange attenuators. Standard and temperature variable. Selectable 1 to 30dB values. Available in Alumina, BeO, and AIN substrates. Up to 27 GHz and up to 250 Watts. MIL testing available.
Bias Tees in frequencies up to 50 GHz with multiple connector configurations.
Ttested to 4mK, frequency ranges from DC to 40 GHz. Proprietary thin film. 2.92mm, SMA, and SMPM connector types.
Surface Mount terminations. Chip, flange and pill style. DC to 40 GHz. Up to 250 Watts. Low PIM options. MIL testing available. Choose from thin film and thick film. Alumina, AIN and BeO substrates.
Manual Step and Continuously Variable Attenuators are ideal for lab bench applications and front panel mounting on instruments and subsystems.
Wide variable attenuation range with approximately linear calibrated dial, and rugged design. Weinschel Product
DC Blocks prevent the flow of direct current (DC) frequencies while offering minimum interference to RF signals.
Spectrum Control makes chip, flange, rod, and thin film resistors.
Coaxial adapters and adapter systems are offered as precision In-Series and Between-Series with a variety of connector options.
Coaxial adapters and adapter systems are offered in a variety of connector options and operating ranges from DC to 26.5 GHz.
Spectrum Control Inmet Dust and Moisture caps are Ideal for sealing ports for shipping or storage.
Gain Equalizers offer simple solutions to your system slope problems. Inmet brand product.