ZBT-K44-FT+

Overview

The ZBT-K44-FT+ is an ultra-wideband coaxial bias-tee from Mini-Circuits, designed for millimeter-wave applications. It operates across a frequency range of 10 MHz to 40 GHz. The component features low insertion loss with a typical value of 1.0 dB and excellent return loss, typically 15 dB. It supports a maximum DC current of 250 mA. This device integrates RF and DC paths into a single coaxial interface, suitable for high-frequency signal conditioning.

Feature Summary

• Ultra-wideband operation covering frequencies from 10 MHz to 40 GHz
• Low insertion loss for efficient signal transmission
• Excellent return loss characteristics ensuring impedance matching
• Coaxial design integrating RF and DC biasing capabilities

Applications

• Millimeter-wave test and measurement equipment
• Wideband amplifier biasing circuits
• High-frequency communication systems
• RF signal conditioning modules

Procurement Notes

Verify the specific datasheet version when ordering, as Mini-Circuits may update specifications or pin configurations over time. Ensure the required DC current rating of 250 mA aligns with your circuit design. Confirm that the coaxial connector type matches your system infrastructure. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a wide frequency range up to 40 GHz is required in a compact coaxial form factor. Consider the 1.0 dB typical insertion loss impact on overall system gain. Evaluate the 250 mA current limit against the power requirements of the downstream active devices. Compare return loss performance against other bias-tees to ensure minimal signal reflection in high-frequency designs.

Part Context

The ZBT-K44-FT+ belongs to Mini-Circuits' ZBT series of wideband bias-tees. These components are engineered for high-performance RF applications where broad bandwidth and low loss are critical. The series includes various models tailored for different frequency ranges and current capacities, providing designers with flexible options for integrating DC bias into RF paths without compromising signal integrity.

Replacement Considerations

Check Mini-Circuits documentation for direct substitutes within the ZBT series that match specific frequency or current constraints. Verify compatibility with existing PCB footprints or connector interfaces if replacing in an established design. Ensure any alternative component meets the 40 GHz upper frequency limit and 250 mA current requirement.