BALF-SPI2-01D3

Balun Overview

The BALF-SPI2-01D3 is an ultra-miniature balun designed for sub-1GHz applications, specifically optimized for the S2-LP transceiver. It operates within a frequency range of 868MHz to 928MHz and features a nominal input impedance of 50 Ω with a conjugate match. The device integrates a matching network and harmonics filter, with customized matching impedance for ST solutions. Key electrical parameters include a maximum insertion loss of 2.1dB, a minimum return loss of 10dB, and a phase difference of 7°. It is housed in a compact 6-UFBGA package.

Balun Feature Summary

• Integrates matching network and harmonics filter for simplified circuit design
• Customized matching impedance optimized for STMicroelectronics S2-LP transceiver
• Ultra-miniature chip-scale package for space-constrained applications

Balun Applications

• Sub-1GHz wireless communication systems
• IoT sensor nodes requiring compact RF front-ends
• Applications utilizing STMicroelectronics S2-LP transceivers

Balun Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or verified partners. Confirm datasheet revision DM00417488 matches production requirements. Ensure ESD handling protocols are followed during assembly due to the small form factor. Cross-reference pinout and soldering profiles with official manufacturing guidelines to prevent reliability issues.

Balun Selection Notes

Select this component when designing for 868-928MHz bands with strict size constraints. It is ideal for systems using S2-LP transceivers where integrated filtering reduces external component count. Consider the 2.1dB insertion loss impact on link budget. Evaluate thermal performance within the 6-UFBGA package for high-density PCB layouts.

Balun Part Context

Part of the BALF series from STMicroelectronics, focusing on integrated RF solutions. This model specifically targets sub-1GHz ISM bands. It complements other baluns like BALFHB-WL-01D3 but offers unique integration for specific transceiver pairs. The product line emphasizes miniaturization and ease of integration for modern wireless modules.

Balun Replacement Considerations

BALF-SPI-01D3 offers similar functionality with a broader frequency range (779MHz ~ 956MHz) and different electrical characteristics such as 2.0dB insertion loss and 10° phase difference. Verify impedance matching compatibility with the target transceiver before substitution.