BALF-NRG-01D3

Balun Overview

The BALF-NRG-01D3 is an ultra-miniature balun from STMicroelectronics, designed for Bluetooth Low Energy applications. It operates within the 2.4GHz to 2.5GHz frequency range and features a 50/50 Ohm impedance configuration. The component utilizes a Chip Scale Package (CSP) with a 0.4mm pitch, measuring approximately 1.1 x 2.4 mm. It integrates an impedance matching network and a harmonics filter tailored for BlueNRG series chips.

Balun Feature Summary

• Integrates impedance matching network and harmonics filter
• Ultra-miniature form factor suitable for space-constrained designs
• Optimized specifically for BlueNRG series microcontrollers

Balun Applications

• Bluetooth Low Energy (BLE) wireless modules
• Smart home devices
• Industrial sensor networks
• Personal health monitors

Balun Procurement Notes

Verify the specific package variant and lead times directly with authorized distributors. Confirm compatibility with the target BlueNRG chip version, as matching impedance may vary between models like BlueNRG-1 and BlueNRG-2. Ensure ESD protection protocols are followed during handling due to the small CSP footprint.

Balun Selection Notes

Select this component when designing compact BLE systems requiring integrated RF filtering and matching. It is specifically matched to STBlueNRG controllers, reducing external component count. Consider the 0.4mm pitch for PCB layout constraints and ensure the design supports the required thermal and mechanical stability for the ultra-miniature package.

Balun Part Context

This balun is part of STMicroelectronics' BlueNRG ecosystem, providing passive RF components optimized for their low-energy Bluetooth SoCs. It complements active chips like the BlueNRG-1 and BlueNRG-2, enabling complete reference designs for IoT applications with minimal board space and power consumption.

Balun Replacement Considerations

The MLPF-NRG-01D3 serves as a related component in the same family, offering similar integration but potentially different impedance characteristics. Verify exact pinout and electrical parameters before substitution, as matching networks are customized for specific BlueNRG variants.