BALF-112X-02D3

Overview

The BALF-112X-02D3 is an ultra-miniature balun transformer manufactured by STMicroelectronics. It operates within a frequency range of 431MHz to 436MHz and provides impedance matching between 50 Ohm unbalanced and 50 Ohm balanced ports. The device integrates a harmonic filter and matching network, designed for surface mount installation in an 8-UFBGA package.

Feature Summary

• Integrates a harmonic filter with the balun transformer
• Customized matching impedance for specific transceivers
• Ultra-miniature surface mount design

Applications

• Signal conditioning for CC1120 transceivers
• Signal conditioning for CC1125 transceivers
• Bluetooth RF filter applications

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm package integrity and pin alignment prior to assembly. Ensure storage conditions meet moisture sensitivity level requirements. Cross-reference datasheet DM00151360 for detailed handling specifications. Validate supply chain documentation against official manufacturer records.

Selection Notes

Select this component when designing circuits requiring integrated harmonic filtering and precise impedance matching for 433MHz ISM band operations. It is specifically optimized for compatibility with Texas Instruments CC1120 and CC1125 radio chips. Consider the compact footprint for space-constrained PCB layouts.

Part Context

This part belongs to the BALF series of ultra-miniature baluns from STMicroelectronics. These components are engineered to simplify RF front-end designs by combining balancing functions with filtering capabilities. The series targets wireless communication modules requiring high integration and minimal external component count.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.