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K2TVA Series

Product catalog summary

Overview: The SpaceNXT™ K2TVA Series by Smiths Interconnect is designed for high-reliability connectivity in commercial space programs, including GEO/MEO and LEO satellites. It is part of the SpaceNXT™ family of COTS+ products, specifically engineered for critical space flight applications.

Features:

Small footprint with multiple mounting configurations.
Broad specific frequency range with low VSWR.
Multiple temperature shift options and a range of attenuation values with tight tolerance.

Applications: Suitable for amplifier circuits, transmit/receive modules, up/down converters, instrumentation, satellite communications, and radars.

Technical Characteristics:

Mounting options include Surface Mount (SMT) and Wire Bondable.
Nominal impedance of 50 ohms with frequency ranges of 17-22 GHz and 27-32 GHz.
Attenuation values of 3, 4, 5, 6 dB with an accuracy of ± 1.0 dB maximum.
Temperature Coefficient of Attenuation (TCA) options of -0.005 & -0.007 dB/dB/°C with a tolerance of ± 0.001 dB/dB/°C.
Input power CW of 200 milliwatts max up to 125°C and peak power of 2 watts based on 10 µS pulse width at 1% duty cycle.
VSWR of 1.25 typical, 1.40:1 maximum within the selected frequency band.

Environmental and Mechanical Specifications:

Operating temperature range from -55°C to +150°C and storage temperature from -65°C to +150°C.
Moisture Sensitivity Level (MSL) 1 - Unlimited.
Constructed on an Alumina substrate with thick film resistive and terminal materials.
Protective polymer coating with various finish options including RoHS compliance.

Quality Assurance: Includes sample visual and mechanical inspection with periodic electrical inspection for commercial grade products. High reliability tested products are available per MIL-PRF-55342 standards.

Ordering Information: Model numbers are specified with options for dB value, TCA slope, frequency band, mounting configuration, and terminal finish.

Catalog excerpts

SpaceNXT™ K2TVA Thermopad® TEMPERATURE VARIABLE ATTENUATOR SpaceNXT™ K2TVA Thermopad® Series offers a totally passive solution for gain compensation over temperature with proven high-reliability heritage SpaceNXT™ K2TVA Thermopad® Series is Smiths Interconnect’s response to the increasing demand for high-reliability connectivity in commercial space programs, particularly GEO/MEO and LEO satellites. K2TVA Thermopad is part of SpaceNXT™ family of COTS+ products, specifically designed and tested for critical space flight applications. The new SpaceNXT™ K2TVA Series offers up to 4 times Temperature Coefficient of Attenuation over the original KTVA series. This series focuses on improved performance in specific frequency bands to target increased RF stability and temperature shift response over the life of the system. The K2TVA platform offers significant heritage and proven performance in a cost-effective commercial grade product. High reliability tested options are available to ensure mission success in demanding high reliability applications. ■ Tight Attenuation Tolerance K2TVA products are rated for 17-22 GHz and 27-32 GHz with excellent response in the specified band of application. K2TVA is constructed on an Alumina substrate with rugged thick film terminations and thick film thermistor technology elements. The product also includes a protective coating for added protection from various environmental conditions. Multiple attenuation values, temperature shift options and mounting configurations are available to support both surface mount and wire bond applications. Various finish options are also available including RoHS compliance. ■ Small Footprint ■ Multiple Mounting Configurations ■ Broad Specific Frequency Range ■ Low VSWR ■ Multiple Temperature Shift Options ■ Range of Attenuation Values Applications ■ Amplifier Circuits ■ Transmit/Receive Modules ■ Up/Down Converters ■ Instrumentation

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Technical Characteristics Mounting Configuration Options Wire Bondable Electrical Nominal Impedance Frequency Range Attenuation Values Attenuation Accuracy Temperature Coefficient of Attenuation (TCA) Temperature Coefficient Tolerance 200 Milliwatts Max up to 125°C (See derating curve) Peak Power 2 Watts based on 10 µS pulse width @ 1% Duty Cycle 1.25 Typical, 1.40:1 Maximum within selected frequency band Environmental Operating Temperature Storage Temperature Moisture Sensitivity Level Mechanical Substrate Material Resistive Film Thick Film Terminal Material Thick Film Protective Coating Finish...

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Power Derating Curve Equivalent Model RATED POWER SAFE OPERATING AREA Unless otherwise specified, tolerance: X.XX = ±0.01” X.XXX = ±0.001

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Suggested Mounting Footprint Inches Part Number Specify Model Number: K2TVAXXNXXX N Surface Mount Wire Bondable Copyright© 2021 Smiths Interconnect | All rights reserved | Version 1.0 The information contained within this document is subject at all times to applicable Export Control regulations and legal requireme

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