HHM1545

Balun Overview

The TDK HHM1545 is an RF balun designed for the 3.4GHz to 4.01GHz frequency range, specifically targeting WiMAX applications. It features a 50/50 Ohm impedance configuration and utilizes a compact 0805 (2012 Metric) surface-mount package with six PCB pads. Key electrical specifications include a maximum insertion loss of 1.2dB, a minimum return loss of 10dB, and a phase difference of 180° ±10°. The component is RoHS compliant and classified under EAR99 export control.

Balun Feature Summary

• Provides balanced-to-unbalanced signal conversion within the specified microwave frequency band
• Utilizes a compact surface-mount footprint suitable for space-constrained circuit designs
• Maintains stable phase characteristics and impedance matching for signal integrity

Balun Applications

• WiMAX mobile broadband devices
• Wireless local loop equipment
• Microwave communication systems

Balun Procurement Notes

Verify current product status as the component may be listed as Not Recommended for New Design or End-of-Life. Confirm availability through authorized distributors and check for official Product Change Notices regarding manufacturing updates or obsolescence schedules before finalizing procurement plans.

Balun Selection Notes

Select this component when designing circuits requiring a balun for the 3.4-4.01GHz range with strict size constraints. Ensure the application demands low insertion loss and precise phase balance. Consider alternative models if the design requires different impedance ratios or operates outside the specified frequency bandwidth.

Balun Part Context

The HHM1545 belongs to TDK's HHM series of RF baluns, which are engineered for high-frequency signal conditioning. This series supports various wireless standards by providing reliable impedance transformation in small packages, facilitating integration into modern portable and base station electronics.

Balun Replacement Considerations

The HHM1727D1 is identified as a manufacturer-recommended substitute. Verify compatibility regarding frequency range, impedance, and physical dimensions before implementation.

Balun FAQ

What is the operating frequency range of the HHM1545?

The component operates within a frequency range of 3.4GHz to 4.01GHz.

What is the maximum insertion loss specification?

The maximum insertion loss is specified as 1.2dB.