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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 20V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：20 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：55 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 14 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B20-HE3_A-18 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in an SOT-23 surface-mount package. The nominal Zener voltage is 20 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 50 µA at 15 V and a dynamic resistance of 220 Ω at the test current of 5 mA. The device is AEC-Q101 qualified for automotive applications, operates within a temperature range of -55 °C to +150 °C, and has a maximum power dissipation of 300 mW on an FR-4 board.
Feature Summary
- Dual common anode Zener diode array configuration
- AEC-Q101 qualified for automotive reliability standards
- Tight ±2% Zener voltage tolerance
- ESD protection exceeding 8 kV (HBM) and 800 V (MM)
Applications
- Automotive circuit voltage regulation
- Precision reference voltage generation
- Overvoltage protection in sensitive electronics
Procurement Notes
Verify the specific ordering code suffix against the manufacturer's documentation to confirm tape-and-reel specifications and packaging dimensions. Ensure that the component meets the required AEC-Q101 qualification status if intended for automotive deployment. Cross-reference the RoHS compliance status with the latest environmental declarations provided by the supplier.
Selection Notes
Select this component when a precise 20 V reference with high stability is required in a compact footprint. The ±2% tolerance makes it suitable for applications demanding tighter voltage control than standard commercial grades. Verify that the thermal management design accommodates the specified junction-to-lead thermal resistance for the target operating environment.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V. The 'B' designation indicates the ±2% tolerance grade, while the 'HE3_A' suffix denotes the AEC-Q101 qualified, lead-free variant. The '-18' suffix specifies the 10,000-unit reel packaging format.
Replacement Considerations
AZ23B20-E3-18
FAQ
What is the dynamic resistance of the AZ23B20-HE3_A-18?
The dynamic resistance (ZZ) is 220 Ω, measured at a test current (IZT1) of 5 mA.
Is the AZ23B20-HE3_A-18 suitable for automotive applications?
Yes, the HE3_A variant is explicitly AEC-Q101 qualified, making it suitable for automotive environments.
What is the maximum reverse leakage current for this device?
The maximum reverse leakage current (IR) is 50 µA, specified at a reverse voltage (VR) of 15 V.
