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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 12V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：12 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：20 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 9 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 AZ23B12-HE3-18 is a silicon planar Zener diode array from the AZ23 series, 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 12 V with a tight tolerance of ±2%. Electrical characteristics include a test current of 5 mA, a maximum reverse leakage current of 0.1 µA at 9 V, and a dynamic resistance of 20 Ω at 5 mA. The device supports a maximum power dissipation of 300 mW on an FR-4 board and operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration for space-efficient circuit design
- High precision ±2% Zener voltage tolerance
- Automotive-grade AEC-Q101 qualification
- Robust ESD protection exceeding 8 kV (HBM) and 800 V (MM)
Applications
- Voltage reference circuits requiring high stability
- Over-voltage protection stages in automotive electronics
- Clamping applications in signal conditioning
Procurement Notes
Verify that the ordering code matches the specific suffix requirements for automotive qualification and reel packaging. Confirm RoHS compliance status and material categorization details against the latest Vishay documentation before finalizing procurement orders.
Selection Notes
Select this component when a precise 12 V reference with ±2% tolerance is required in a compact SOT-23 footprint. Ensure the application environment stays within the specified -55 °C to +150 °C operating range and accounts for the 300 mW thermal dissipation limit on standard PCBs.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes. The 'B' designation indicates the tighter ±2% voltage tolerance compared to the standard ±5% 'C' grade. The 'HE3_A' suffix denotes the Halogen-free, lead-free variant that meets AEC-Q101 automotive reliability standards.
Replacement Considerations
AZ23B12-E3-18
FAQ
What is the dynamic resistance of the AZ23B12-HE3-18?
The dynamic resistance (ZZ) is 20 Ω, measured at a test current (IZT1) of 5 mA.
Is this component suitable for automotive applications?
Yes, the HE3_A suffix indicates that the device is qualified according to the AEC-Q101 automotive standard.
What is the maximum reverse leakage current?
The maximum reverse leakage current is 0.1 µA, specified at a reverse voltage (VR) of 9 V.
