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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 22V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：22 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：55 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 17 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 AZ23B22-HE3-18 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in a SOT-23 surface-mount package. The nominal Zener voltage is 22 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 50 μA at 17 V and a dynamic resistance of 55 Ω at a test current of 5 mA. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode Zener diode array for precise voltage regulation
- High precision ±2% Zener voltage tolerance
- Automotive-grade AEC-Q101 qualification
- ESD protection exceeding 8 kV (HBM) and 800 V (MM)
Applications
- Voltage reference circuits requiring high stability
- Over-voltage protection in automotive electronics
- Clamping applications in signal conditioning
Procurement Notes
Verify the complete ordering code AZ23B22-HE3-18 against official Vishay documentation to confirm the specific suffixes. Ensure the HE3_A designation aligns with required AEC-Q101 automotive qualification standards. Confirm that the -18 suffix corresponds to the correct 10,000-unit reel packaging format before finalizing procurement orders.
Selection Notes
Select this component when a dual common anode Zener array with ±2% voltage tolerance is required. The HE3 variant provides necessary AEC-Q101 compliance for automotive environments. Verify that the 55 Ω dynamic resistance and 50 μA leakage current meet the specific circuit requirements compared to standard commercial grade alternatives.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes from Vishay. The series offers a wide Zener voltage range from 2.2 V to 75 V. The AZ23B22-HE3-18 specifically represents the 22 V breakdown voltage option with high precision and automotive reliability ratings.
Replacement Considerations
AZ23B22-E3-18
FAQ
What is the difference between the AZ23B22-HE3-18 and AZ23B22-E3-18?
The AZ23B22-HE3-18 is AEC-Q101 qualified for automotive applications, whereas the AZ23B22-E3-18 is a commercial grade device without this specific automotive qualification.
What does the 'B' indicate in the part number AZ23B22-HE3-18?
The 'B' indicates a Zener voltage tolerance of ±2%, providing higher precision compared to the 'C' designation which denotes a ±5% tolerance.
Is the AZ23B22-HE3-18 suitable for high-temperature environments?
Yes, the device is rated for an operating temperature range from -55 °C to +150 °C, making it suitable for demanding thermal conditions.
