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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：20 V
- Current - Output：100 mA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The ZHT431FMTA is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides excellent temperature stability with an extended operating range from -55°C to +125°C. The output voltage is programmable between 2.5V and 20V using two external divider resistors. This device offers current sink capability ranging from 50µA to 100mA and features a maximum temperature coefficient of 67ppm/°C. It utilizes a surface mount SOT23 (Type DN) package and is available in a 0.5% tolerance grade.
Feature Summary
- Programmable output voltage settable between 2.5V and 20V via external resistors
- Temperature compensated for operation across the full specified temperature range
- Low output noise characteristics suitable for precision applications
- Totally lead-free, fully RoHS compliant, and halogen/antimony free
Applications
- Series and shunt regulator circuits
- Voltage monitor systems
- Over-voltage and under-voltage protection
- Switch mode power supplies
Procurement Notes
Verify that the specific part number ZHT431FMTA corresponds to the 0.5% tolerance variant within the ZHT431 family. Confirm the SOT23 (Type DN) package marking '43P' matches the required identification. Ensure compliance with RoHS and environmental standards as defined by the manufacturer's documentation before finalizing procurement specifications.
Selection Notes
Select this component when high precision and low temperature drift are required compared to standard Zener diodes. The 0.5% tolerance ensures tight reference accuracy. Consider the 50µA minimum cathode current requirement for regulation stability at light loads. Verify that the application circuit can support the maximum 100mA current sink capability and the 20V cathode voltage limit.
Part Context
This component belongs to the ZHT431 series of adjustable precision Zener shunt regulators. It serves as a direct replacement for traditional Zener diodes where improved performance and stability are necessary. The F suffix indicates the specific 0.5% tolerance grade, while the TA suffix denotes the tape and reel packaging format for automated assembly.
Replacement Considerations
The datasheet notes that the ZHT431F01-7 is End of Life without any alternative. No other specific substitute part numbers are documented in the provided source material.
