ZTL432BFFTA

Overview

The ZTL432BFFTA is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It operates within an ambient temperature range of -40°C to +125°C and features a maximum cathode voltage rating of 20V. The device offers a sink current capability ranging from 1mA to 100mA. As the B-grade variant, it provides an initial reference voltage tolerance of 0.5% at +25°C. The output voltage is adjustable between VREF and 20V using two external divider resistors. It utilizes the SOT23F package.

Feature Summary

• Adjustable output voltage settable via external resistors
• High temperature stability across extended ranges
• Low dynamic output impedance for regulation accuracy
• Lead-free and RoHS compliant construction

Applications

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

Procurement Notes

Verify that the component matches the specific SOT23F package configuration required for your design, as the ZTL432 pinout differs from the standard ZTL431. Confirm the B grade selection ensures the necessary 0.5% initial tolerance for your application's precision requirements before finalizing procurement.

Selection Notes

Select this part when a higher operating voltage limit of 20V is needed compared to standard 36V counterparts, or when specific SOT23F footprint constraints apply. Ensure the circuit design accommodates the recommended minimum cathode current for stable regulation and includes appropriate decoupling capacitors to prevent oscillation during operation.

Part Context

This component belongs to the ZTL431/ZTL432 series of cost-effective adjustable precision shunt regulators. While electrically equivalent to the TL431/TL432 series, it is distinguished by its lower maximum operation voltage. The ZTL432 specifically denotes a different pinout arrangement in the SOT23 and SOT23F packages compared to the ZTL431.

Replacement Considerations

Functionally equivalent to the TL432 with the exception of the maximum operation voltage. Verify pin compatibility if replacing ZTL431 variants, as the ZTL432 utilizes a distinct pinout in the SOT23F package.