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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23
- Series：-
- Mfr：Diodes Incorporated
- Package：Strip
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：20 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 85°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 ZR431F01-7 is a three-terminal adjustable precision shunt regulator manufactured by Diodes Incorporated. It provides an output voltage programmable between 2.5V and 20V using external divider resistors. The device features a 1% initial accuracy tolerance, a maximum temperature coefficient of 55 ppm/°C, and a cathode current handling capability up to 100mA. It operates within a temperature range of -40°C to +85°C and is housed in a surface-mount SOT-23 package.
Feature Summary
- Temperature compensated for operation over the full specified temperature range
- Low output noise characteristics suitable for sensitive applications
- Capable of sinking current from 50µA to 100mA
Applications
- Shunt regulator circuits
- Series regulator configurations
- Voltage monitoring systems
- Over-voltage and under-voltage protection
- Switch mode power supplies
Procurement Notes
Verify the specific ordering suffix '-7' corresponds to the tape and reel packaging format with a quantity of 3000 units per reel. Confirm that the 'F' package code matches the required SOT-23 footprint for your PCB layout. Ensure compliance with RoHS directives if lead-free finish is mandatory for your assembly process.
Selection Notes
Select this component when a precise reference voltage is required in a compact surface-mount form factor. The 1% tolerance offers improved accuracy compared to standard zener diodes. Consider the 55 ppm/°C temperature coefficient for thermal stability requirements. Verify that the external resistor network can support the minimum 50µA cathode current for proper regulation.
Part Context
This part belongs to the ZR431 family of adjustable precision zener shunt regulators. It serves as a high-performance replacement for traditional zener diodes where better temperature stability and lower dynamic impedance are necessary. The series includes variants with different tolerances and packages, such as the SOT-223 option.
Replacement Considerations
ZR431F005-7 (0.5% tolerance)
FAQ
What is the minimum cathode current required for regulation?
The device requires a minimum cathode current of 50µA to maintain regulation at VZ = VREF.
How is the output voltage determined?
The output voltage is set to any value between 2.5V and 20V by selecting two external divider resistors connected to the reference pin.
