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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 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 ZHT431F01TA is a three-terminal adjustable precision zener shunt regulator manufactured by Diodes Incorporated. It provides an output voltage range from 2.5V to 20V, set via external resistors. The device features a 1% initial accuracy tolerance and a maximum temperature coefficient of 67ppm/°C. It operates within a recommended cathode current range of 50µA to 100mA and supports a maximum cathode voltage of 20V. The unit is housed in a surface-mount SOT23 (Type DN) package and is rated for operation across an extended temperature range of -55°C to +125°C.
Feature Summary
- Temperature compensated for stable operation over the full specified temperature range
- Capable of sinking current from 50µA up to 100mA with low output noise
- Programmable output voltage allows replacement of standard zener diodes
Applications
- Series and shunt regulators
- Voltage monitor circuits
- Over voltage and under voltage protection
- Switch mode power supplies
Procurement Notes
Verify that the specific part number matches the required 1% tolerance designation. Confirm the package type corresponds to the SOT23 (Type DN) footprint. Ensure the application environment falls within the -55°C to +125°C operating limits. Check compliance requirements against RoHS 3 standards if necessary. Review absolute maximum ratings before finalizing circuit design.
Selection Notes
Select this component when precise voltage regulation is required across wide thermal variations. The 1% tolerance suits applications demanding high accuracy. Consider the 100mA sink capability for moderate load currents. Evaluate the SOT23 package size for space-constrained designs. Compare against other tolerances like 0.5% or 2% if cost or performance differs.
Part Context
This device belongs to the ZHT431 family of adjustable precision shunt regulators. It serves as a direct upgrade to traditional zener diodes, offering superior stability and programmability. The F01 suffix indicates a 1% tolerance variant. It is designed for surface-mount assembly, supporting automated manufacturing processes.
Replacement Considerations
ZHT431F01-7 is listed as End of Life without any alternative.
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 50µA.
How is the output voltage adjusted?
The output voltage is set between 2.5V and 20V using two external divider resistors.
