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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 30V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：30 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 22.5 V
- Operating Temperature：-55°C ~ 150°C
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B30-HE3-18 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It features a dual common-anode configuration with a nominal Zener voltage of 30 V and a tight tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 500 mW on leads or 300 mW on an FR-4 board. It is AEC-Q101 qualified for automotive applications and offers high ESD protection capability.
Feature Summary
- Dual common-anode Zener diode array providing two independent voltage references in a single compact surface-mount package.
- AEC-Q101 qualified construction ensuring reliability and compliance with stringent automotive electronics standards.
- High electrostatic discharge (ESD) robustness exceeding 8 kV via human body model and 800 V via machine model testing.
Applications
- Automotive electronic circuits requiring precise voltage regulation under strict environmental conditions.
- Protection stages for sensitive input/output interfaces against transient overvoltage events.
- Reference voltage generation for analog-to-digital converters and precision measurement instrumentation.
Procurement Notes
Verify that the ordering code suffix matches the required tape-and-reel quantity and packaging specifications. Confirm RoHS compliance status and ensure the component meets specific automotive qualification requirements if deployed in regulated environments. Cross-reference the manufacturer's latest documentation for any potential obsolescence notices or assembly changes.
Selection Notes
Select this variant when a ±2% voltage tolerance is mandatory for circuit accuracy. Ensure the application current does not exceed the specified test current limits to maintain stable regulation. Verify thermal management capabilities, as power dissipation drops significantly at elevated ambient temperatures above 25 °C.
Part Context
This component belongs to the AZ23 series of small-signal Zener diodes manufactured by Vishay General Semiconductor. The series provides a wide range of standard Zener voltages from 2.2 V to 75 V in a space-saving SOT-23 footprint, catering to both commercial and automotive discrete semiconductor needs.
Replacement Considerations
AZ23B30-E3-18
FAQ
What is the dynamic resistance of the AZ23B30-HE3-18?
The maximum dynamic resistance (ZZ) at the test current IZT1 is 80 Ohms.
How is the reverse leakage current defined for this part?
The maximum reverse leakage current (IR) is specified as 0.05 μA when measured at a reverse voltage (VR) of 22 V.
What is the temperature coefficient for the 30 V Zener voltage?
The temperature coefficient (αVZ) ranges from a minimum of 8 x 10⁻⁴/°C to a maximum of 10 x 10⁻⁴/°C.
