TL431HA-TP

Overview

The TL431HA-TP is a programmable precision shunt voltage reference manufactured by Micro Commercial Components (MCC). It operates within a cathode voltage range of up to 36 V and provides an adjustable output voltage starting from a minimum of 2.5 V. The device supports a sink current capability of 100 mA with a typical initial accuracy tolerance of ±0.5%. It is designed for surface mount installation in SOT-23 packages and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Programmable output voltage allows setting values between the internal reference threshold and maximum cathode voltage using external resistors.
• Low dynamic output impedance ensures stable regulation performance under varying load conditions.
• High thermal stability guarantees consistent operation across the full industrial temperature range.

Applications

• Shunt regulator circuits
• Series regulator configurations
• Switching power supply feedback loops
• Precision voltage reference sources

Procurement Notes

Verify component authenticity through official MCC documentation or authorized distributors. Confirm package type matches SOT-23 requirements. Check RoHS compliance status against specific project constraints. Ensure ordering suffixes align with tape and reel specifications if automated assembly is planned. Validate datasheet revisions for any recent parameter updates.

Selection Notes

Select this component when high precision and wide temperature stability are required in compact surface mount designs. The SOT-23 package suits space-constrained PCB layouts. Consider the ±0.5% tolerance for applications demanding tight voltage accuracy. Evaluate the 100 mA sink current against circuit load requirements to ensure adequate drive capability without exceeding thermal limits.

Part Context

This part belongs to the TL431 family of three-terminal adjustable regulators known for their reliability and widespread use in power management. MCC produces this variant as a lead-free, halogen-free component suitable for modern manufacturing processes. It serves as a direct replacement for standard TL431 devices while offering specific packaging and compliance attributes defined by the manufacturer.

Replacement Considerations

Compatible substitutes include other TL431 variants from different manufacturers that share identical pinouts and electrical characteristics. Verify that alternative parts meet the same ±0.5% tolerance and SOT-23 package dimensions. Ensure thermal ratings and operating temperature ranges match the original design specifications.