HHM1902B1

Balun Overview

The HHM1902B1 is a multilayer LTCC balun manufactured by TDK Corporation, designed for signal conditioning in RF applications. It operates within the frequency range of 2400 MHz to 2500 MHz. The component features a balanced impedance configuration of 50 Ohms and an unbalanced impedance of 50 Ohms. It utilizes Low-Temperature Co-Fired Ceramic technology to ensure reliable performance. The physical dimensions are specified as 1.00 mm in length, 0.50 mm in width, and a maximum thickness of 0.50 mm. The device is housed in a 0402 (1005 Metric) surface-mount package. It supports an operating temperature range from -40°C to +85°C.

Balun Feature Summary

• Utilizes low-temperature co-fired ceramic (LTCC) technology for compact integration
• Provides balanced-to-unbalanced signal conversion with 50/50 Ohm impedance matching
• Designed for operation within the 2.4 GHz to 2.5 GHz frequency band

Balun Applications

• Wireless LAN modules
• Bluetooth transceivers
• Zigbee communication devices

Balun Procurement Notes

Verify that the ordered part number matches the specific suffix B1, which denotes the 0402 package variant. Confirm that the application environment remains within the specified -40°C to +85°C operating temperature range. Ensure PCB layout accommodates the 1.00 mm x 0.50 mm footprint. Check datasheet for recommended soldering profiles compatible with LTCC materials to prevent thermal stress during assembly.

Balun Selection Notes

Select this component when a small form factor is required for 2.4 GHz ISM band applications. The 0402 package size suits high-density board designs. Verify that the 50 Ohm balanced and unbalanced ports align with the system's transmission line requirements. Consider the LTCC construction for stability in consumer electronics where space constraints are critical.

Balun Part Context

This component belongs to the HHM series of LTCC baluns produced by TDK Electronics. The series offers various impedance ratios and frequency ranges tailored for wireless connectivity standards. The HHM1902B1 specifically targets the 2.4 GHz band, distinguishing it from other variants like the HHM1523B3 which operates at lower frequencies. It serves as a passive RF front-end element.

Balun Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official TDK resources or authorized distributors for cross-reference information regarding equivalent components.