HHM1524B4

Balun Overview

The HHM1524B4 is a signal conditioning LTCC balun transformer manufactured by TDK Corporation. It operates within the frequency range of 824 MHz to 894 MHz, with a center frequency of 855 MHz and a bandwidth of 70 MHz. The device provides impedance conversion between 50 Ohms and 150 Ohms. It features an insertion loss of 1.2 dB and is housed in a compact 0805 (2012 metric) surface-mount package. The component supports board mounting and functions reliably across an operating temperature range from -40°C to +85°C.

Balun Feature Summary

• Provides reliable impedance conversion for wireless systems using LTCC technology
• Designed for GSM Tx-Rx applications with balanced-to-unbalanced signal transformation
• Compact surface-mount construction suitable for space-constrained designs

Balun Applications

• GSM transmitter-receiver circuits
• Wireless communication systems requiring RF baluns
• Impedance matching in mobile device front-ends

Balun Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free specifications prior to procurement. Ensure the supplier provides valid traceability documentation. Check for obsolescence notices as availability may vary. Validate that the received part matches the specified 0805 package dimensions and electrical characteristics.

Balun Selection Notes

Select this component when a 50-ohm to 150-ohm impedance transformation is required in the 824-894 MHz band. Consider the 0805 footprint for PCB layout constraints. Evaluate thermal performance against the -40°C to +85°C operational range. Compare insertion loss specifications against system sensitivity requirements. Ensure compatibility with standard SMT reflow soldering processes.

Balun Part Context

This balun belongs to the TDK HHM series of LTCC components designed for RF signal conditioning. The series focuses on miniaturized solutions for wireless applications. The HHM1524B4 specifically targets GSM frequency bands. It complements other passive components in RF front-end modules. The design emphasizes reliability and consistent performance in consumer electronics.

Balun Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.