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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-25°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The KA431AZTF is a programmable shunt regulator manufactured by onsemi, housed in a TO-92-3 Kinked Lead package. It provides an adjustable output voltage ranging from 2.5V to 36V using two external resistors. The device features a typical initial accuracy of 2% and a temperature coefficient of 50 PPM/°C. It operates with a sink current capacity between 1 mA and 100 mA, with a maximum input voltage of 37 V. The unit supports through-hole mounting and functions within a temperature range of -25°C to +85°C.
Feature Summary
- Programmable output voltage adjustable from 2.5V to 36V via external resistors
- Low dynamic output impedance for stable performance under capacitive loads
- Temperature compensated operation across the full rated operating range
Applications
- Charger voltage regulation
- Power adapter circuits
- Replacement for Zener diodes requiring sharp turn-on characteristics
Procurement Notes
Verify component authenticity and datasheet revision status before integration. Confirm that the TO-92-3 Kinked Lead package meets mechanical constraints. Check for end-of-life or obsolescence notices from onsemi. Ensure thermal management aligns with the specified operating temperature range. Validate pinout compatibility with existing PCB footprints.
Selection Notes
Select this component when precise, adjustable reference voltages are required in space-constrained through-hole designs. Consider the 2% initial accuracy and 50 PPM/°C temperature coefficient for circuit stability requirements. Evaluate the 1 mA to 100 mA sink current capability against load demands. Compare against fixed-reference alternatives if programmability is not needed.
Part Context
The KA431 series represents a family of three-terminal adjustable regulators known for thermal stability and low dynamic output impedance. The KA431AZTF variant specifically denotes the onsemi manufacturing source and the TO-92-3 Kinked Lead packaging style. This part serves as a direct functional replacement for standard Zener diodes in applications demanding higher precision and sharper turn-on characteristics.
Replacement Considerations
The KA431AZBU_NL is listed as an alias for this component. Verify pinout and electrical specifications against other KA431 variants from different manufacturers before substitution.
