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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% TO92
- Series：AZ431L
- Mfr：Diodes Incorporated
- Package：Cut Tape (CT),Tape & Box (TB)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：18 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92
- Grade：-
- Qualification：-
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Overview
The AZ431LAZTR-G1 is a low-voltage adjustable precision shunt regulator from Diodes Incorporated, housed in a TO92 package with ammo packing. It features a reference voltage of 1.24V with 0.5% tolerance and operates within a cathode voltage range of VREF to 18V. The device supports a sink current capacity from 0.1mA to 100mA and maintains stability under capacitive loads. Key electrical characteristics include a typical temperature deviation of 3mV over the full range, a dynamic output resistance of 0.05Ω, and an operating ambient temperature range of -40°C to +125°C.
Feature Summary
- Adjustable precise output voltage programmable between 1.24V and 18V using two external resistors
- High stability under capacitive load conditions ensuring reliable regulation
- Low temperature deviation and low equivalent full-range temperature coefficient for thermal consistency
- Low dynamic output resistance providing sharp turn-on characteristics
Applications
- Switching power supplies
- PC motherboards
- Chargers
- Voltage adapters
- Graphic cards
Procurement Notes
Verify that the specific part number AZ431LAZTR-G1 corresponds to the 0.5% voltage tolerance variant in the TO92 (Ammo Packing) configuration. Confirm RoHS compliance and Green status requirements align with project specifications. Ensure the ordering suffix matches the desired packaging and tolerance level as defined in the manufacturer's official ordering information table to avoid functional discrepancies.
Selection Notes
Select this component when a low-voltage precision reference is required with tight initial accuracy. The 0.5% tolerance offers higher precision than the standard 1.0% option. Consider the TO92 package for through-hole applications requiring robust mechanical mounting. Evaluate the thermal resistance and power dissipation limits relative to the expected cathode current and ambient temperature conditions during design.
Part Context
This device belongs to the AZ431L series of low-voltage adjustable precision shunt regulators. It serves as a direct substitute for traditional zener diodes in various electronic circuits. The series is available in multiple packages including SOT23, SOT25, and SOT89, offering flexibility for different board space and mounting requirements across consumer and industrial electronics.
Replacement Considerations
AZ431LBZTR-G1
FAQ
What is the minimum cathode current required for regulation?
The minimum cathode current for regulation is typically 55µA and maximally 80µA at room temperature.
Is the AZ431LAZTR-G1 suitable for automotive applications?
For automotive applications requiring AEC-Q100 qualification or PPAP capability, customers must contact Diodes Incorporated directly, as standard parts may not meet these specific automotive standards.
