ZTL432AQFTA

Overview

The ZTL432AQFTA is an automotive-compliant adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within a temperature range of -40°C to +125°C and features a reference voltage tolerance of 1% for the A grade. The device supports an output voltage range from VREF up to 20V, set via external resistors. It provides a sink current capability between 1mA and 100mA with a typical dynamic output impedance of 0.2Ω. The component is housed in an SOT23 package and is fully RoHS compliant.

Feature Summary

• AEC-Q100 qualified for automotive applications
• Adjustable output voltage up to 20V
• High stability with low temperature drift
• Lead-free and halogen-free green device

Applications

• Opto-coupler linearization
• Linear regulators
• Improved Zener diode replacement
• Variable reference circuits

Procurement Notes

Verify that the specific part number matches the required A-grade tolerance and SOT23 packaging configuration. Confirm compliance with automotive standards if used in vehicle electronics. Ensure ordering suffixes align with the manufacturer's current active status, as some variants may be end-of-life. Cross-reference datasheet specifications against system requirements before procurement.

Selection Notes

Select this component when an adjustable shunt regulator with automotive qualification is required. The ZTL432 variant offers a distinct pinout compared to the ZTL431 series in the SOT23 package. Consider the 1% initial accuracy and 100mA sink current capacity for precise voltage referencing applications operating across extended industrial temperature ranges.

Part Context

This device belongs to the ZTL43xQ family of adjustable precision shunt regulators designed for automotive environments. It serves as a functional equivalent to standard TL431/TL432 devices but includes enhanced temperature stability and automotive-specific qualifications. The ZTL432 model specifically utilizes a different pin assignment than the ZTL431 in the SOT23 footprint.

Replacement Considerations

Functionally equivalent to the TL431 and TL432, though maximum operation voltages may differ. For direct pin-compatible replacement in SOT23 packages, verify the pinout differences between the ZTL431 and ZTL432 series carefully.