HHM1591A2

Balun Overview

The HHM1591A2 is a multilayer chip balun designed for RF applications within the 350 MHz to 950 MHz frequency range. It features a nominal unbalanced port impedance of 50 Ohms and a balanced port impedance of 100 Ohms. The component supports surface mount technology in an 0805 metric package. Key electrical specifications include a maximum insertion loss of 2.8 dB, a phase balance of 180° ± 20°, and defined amplitude balance characteristics. These parameters ensure signal integrity for balanced-to-unbalanced conversion tasks.

Balun Feature Summary

• Multilayer construction enables compact integration into space-constrained PCB layouts.
• Provides reliable balanced-to-unbalanced signal conversion across a wide frequency spectrum.
• Surface mount design facilitates automated assembly processes.

Balun Applications

• RF front-end modules requiring impedance transformation
• Wireless communication systems operating in the specified frequency band
• Balanced antenna interface circuits

Balun Procurement Notes

Verify the specific datasheet version and ordering suffixes to confirm exact mechanical dimensions and terminal plating options. Ensure that the selected variant matches the required impedance tolerance and power handling capabilities for the target application environment. Cross-reference official TDK documentation for precise reflow soldering profiles and storage conditions.

Balun Selection Notes

Select this component when a 50-ohm to 100-ohm impedance transformation is required within the 350-950 MHz range. Consider the 0805 footprint constraints and the maximum insertion loss limits relative to system noise requirements. Evaluate thermal management needs based on the expected power levels and ambient operating conditions during deployment.

Balun Part Context

This part belongs to TDK's family of multilayer ceramic baluns, which are engineered for high-frequency RF signal processing. These components utilize advanced ceramic materials to achieve stable performance across varying environmental conditions. The series is widely utilized in modern wireless infrastructure and consumer electronics where miniaturization and signal fidelity are critical design priorities.

Balun Replacement Considerations

Consult official TDK substitution guides for compatible alternatives with matching impedance ratios and frequency ranges. Verify that any substitute component meets or exceeds the original insertion loss and phase balance specifications. Ensure physical footprint compatibility if board space is limited.

Balun FAQ

What is the nominal impedance at the unbalanced port?

The nominal impedance at the unbalanced port is 50 Ohms.

Does the component support frequencies up to 1 GHz?

Yes, the operational frequency range extends up to 950 MHz, covering most sub-GHz applications.