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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 56V SOT-23-3
- Series：AZ23
- Mfr：Vishay
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：56 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：135 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 42 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Vishay AZ23B56-HE3_A-08 is a silicon planar Zener diode in an SOT-23 package, configured as a dual common anode device. It features a nominal Zener voltage of 56 V with a ±2% tolerance and a test current of 2 mA. The component has a maximum reverse leakage current of 42 µA at 51 V and dynamic resistance values of 135 Ω (at IZT1) and 425 Ω (at IZT2). Rated for power dissipation up to 500 mW on FR-4 boards, it operates within a temperature range of -55 °C to +150 °C and carries AEC-Q101 qualification.
Feature Summary
- Dual common anode configuration for space-efficient circuit integration
- AEC-Q101 qualified for automotive reliability standards
- High ESD protection capability exceeding 8 kV via human body model
Applications
- Automotive electronic circuits requiring robust voltage regulation
- General-purpose voltage reference applications
- Overvoltage protection stages in signal conditioning
Procurement Notes
Verify the specific ordering code suffix against official documentation to confirm tape-and-reel packaging quantities and RoHS compliance status. Ensure that procurement channels source directly from authorized distributors to guarantee authenticity and traceability of the AEC-Q101 qualification data.
Selection Notes
Select this component when a precise 56 V reference with tight ±2% tolerance is required in a compact SOT-23 footprint. The dual common anode structure allows for efficient use of board space compared to single discrete units. Confirm that the operating environment remains within the specified -55 °C to +150 °C range for optimal performance.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standard Zener voltages graded according to the international E24 standard. The HE3_A suffix specifically denotes RoHS-compliant devices that are also qualified under the AEC-Q101 automotive standard.
Replacement Considerations
Direct substitutes within the same family include AZ23B56-E3-08 (commercial grade) or AZ23B56-HE3_A-18 (different reel size). Cross-brand replacements must match the 56 V nominal voltage, ±2% tolerance, SOT-23 package, and dual common anode configuration.
