TL431BFDT,215

Overview

The Nexperia TL431BFDT,215 is a three-terminal shunt adjustable precision voltage reference housed in an SOT-23 (TO-236AB) surface-mount package. It provides a programmable output voltage range from 2.4 V to 36 V, set by two external resistors. The device features a B-grade initial accuracy of 0.5% and supports a maximum cathode current of 100 mA with a maximum supply voltage of 37 V. It operates within an extended temperature range of -40 °C to +125 °C and includes AEC-Q100 automotive qualification.

Feature Summary

• Programmable output voltage up to 36 V via external resistors
• B-grade tolerance of 0.5% for high precision applications
• AEC-Q100 qualified for automotive reliability standards
• Low output noise and typical output impedance of 0.2 Ω

Applications

• Shunt regulator circuits
• Precision current limiter designs
• Isolated feedback loops for Switch Mode Power Supplies (SMPS)

Procurement Notes

Verify the specific suffix '215' against official Nexperia documentation to confirm reel packaging specifications and tape dimensions. Ensure the B-grade tolerance aligns with circuit requirements. Confirm lead-free status and RoHS compliance details directly from the manufacturer datasheet before finalizing procurement orders.

Selection Notes

Select this component when a compact SOT-23 footprint is required alongside high precision. The B-grade 0.5% tolerance distinguishes it from standard or A-grade variants. Verify that the operating temperature range meets environmental constraints and that the 100 mA sink capability satisfies load requirements.

Part Context

This part belongs to the TL431 series of three-terminal shunt regulators manufactured by Nexperia USA Inc. It utilizes the TO-236AB (SOT-23) package configuration. The device serves as a versatile voltage reference and control element in power management systems, replacing older discrete regulation solutions with integrated precision.

Replacement Considerations

Compatible equivalents include TL431BMFDT,215 (mirrored pinning) and TL431AFDT,215 (1% tolerance). Verify pinout orientation differences between normal and mirrored configurations to ensure compatibility during substitution.