SB4000A

Overview

The SB4000A is a 2.92mm bias tee adapter manufactured by Fairview Microwave, designed for RF applications spanning 30 kHz to 40 GHz. It features three female connectors with normal polarity and maintains a 50 Ohm impedance throughout the signal path. The device supports DC bias currents up to 500 mA and voltages up to 25 Volts DC. Key electrical specifications include a maximum insertion loss of 3.0 dB and a Voltage Standing Wave Ratio (VSWR) of 1.8. Constructed from stainless steel, the unit weighs approximately 23.133 grams.

Feature Summary

• Integrates DC bias injection into RF signal paths using a T-connector topology
• Operates across an ultra-wide frequency range extending to 40 GHz
• Supports continuous DC bias ratings of 500 mA and 25 Volts

Applications

• Biasing active components in high-frequency test and measurement setups
• Integration into vector network analyzer configurations requiring DC power delivery
• RF circuit characterization where simultaneous AC and DC signals are required

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm that the specific revision matches the required 2.92mm interface standards. Ensure handling procedures comply with electrostatic discharge protocols due to the precision nature of the internal circuitry and connector interfaces.

Selection Notes

Select this model when a wide bandwidth up to 40 GHz is necessary alongside DC bias capabilities. The 2.92mm interface ensures compatibility with high-frequency systems requiring low VSWR. Consider the 25V/500mA rating against the target component's power requirements before implementation.

Part Context

This component belongs to the RF Adapters - Tee category within Fairview Microwave’s portfolio. It serves as a specialized interconnect solution bridging standard RF infrastructure with DC power sources. The design prioritizes signal integrity over broad frequency ranges while maintaining robust DC handling capabilities.

Replacement Considerations

No public confirmed substitute part numbers are available for this specific configuration.