HHM1533

Balun Overview

The HHM1533 is an LTCC RF balun designed for cellular applications, covering the 1.92GHz to 2.17GHz frequency range. It provides a 50/50 Ohm impedance transformation with a maximum insertion loss of 1.0dB and a minimum return loss of 10dB. The component features a 180° ±10° phase difference and is housed in a compact 0805 (2012 metric) surface-mount package with six printed circuit board pads.

Balun Feature Summary

• Utilizes LTCC technology for high-frequency signal conditioning
• Provides balanced-to-unbalanced conversion for cellular bands
• Designed for commercial grade reliability

Balun Applications

• Cellular Band 1
• Cellular Band 4
• Cellular Band 10
• Cellular Band 84

Balun Procurement Notes

Verify current availability status as the part is marked not recommended for new designs. Confirm specific ordering suffixes required for tape and reel or cut tape formats. Check datasheet revisions for any recent parameter updates. Ensure compliance with RoHS3 specifications before integration. Validate lead times due to potential production end-of-life constraints.

Balun Selection Notes

Select this component for designs requiring a 50-ohm balanced interface within the specified 1.92GHz to 2.17GHz bandwidth. Ensure the PCB layout accommodates the 0805 footprint and six-pad configuration. Consider the 1.0dB insertion loss impact on system gain. Verify thermal management requirements against the -40°C to +85°C operating range.

Balun Part Context

Part of the TDK HHM series of LTCC baluns. Manufactured by TDK Corporation. Classified under RF components and signal conditioning. Supports multiple cellular frequency bands through precise impedance matching.

Balun Replacement Considerations

HHM17146A1 is listed as a manufacturer-recommended substitute. Verify electrical compatibility and pinout alignment before substitution.