HHM1564A4

Balun Overview

The TDK HHM1564A4 is a surface-mount multilayer chip balun designed for RF applications. It operates within a frequency range of 824MHz to 894MHz, suitable for GSM and TX-RX systems. The component features an unbalanced impedance of 50 Ohms and a balanced impedance of 200 Ohms. It is housed in an 0805 (2012 metric) package with dimensions of 2.00mm length, 1.25mm width, and 0.95mm thickness. The device supports an operating temperature range from -40°C to 85°C.

Balun Feature Summary

• Provides conversion between balanced and unbalanced signals for RF circuits
• Designed for compact surface-mount integration in mobile communication devices
• Optimized for low insertion loss performance in the specified frequency band

Balun Applications

• GSM wireless communication equipment
• RFID transceiver modules
• Mobile phone transmit-receive sections

Balun Procurement Notes

Verify part status carefully as this component may be listed as Last Time Buy. Confirm that the specific ordering suffix matches the required impedance and frequency specifications. Ensure compatibility with standard reflow soldering profiles for 0805 packages. Cross-reference manufacturer datasheets to validate current availability and lead times before finalizing procurement plans.

Balun Selection Notes

Select this balun when designing circuits requiring signal conversion between 50 Ohm and 200 Ohm lines within the 824-894MHz band. Consider the 0805 footprint constraints and thermal operating limits up to 85°C. Evaluate insertion loss requirements against system sensitivity needs. Ensure the design accommodates the physical dimensions and mounting orientation specified for reliable SMT assembly.

Balun Part Context

The HHM1564A4 belongs to the TDK HHM series of multilayer ceramic baluns. These components are engineered for high reliability in consumer electronics. The series utilizes advanced thin-film technology to achieve stable electrical characteristics. This specific model targets legacy and specialized GSM infrastructure where precise impedance transformation is critical for signal integrity.

Balun Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify functional equivalence with other TDK HHM series variants or competitor baluns offering identical 50/200 Ohm impedance ratios and similar frequency coverage.