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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)：25 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 8 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 AZ23B12-HE3_A-18 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a dual common-anode configuration with two independent Zener diodes sharing a single anode terminal. The nominal Zener voltage is 12 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 0.1 µA at 9 V and a dynamic resistance of 20 Ω at a test current of 5 mA. The device is AEC-Q101 qualified for automotive applications and supports an operating temperature range from -55 °C to +150 °C.
Feature Summary
- Dual common-anode configuration providing two independent Zener channels within a compact three-terminal footprint.
- AEC-Q101 qualification ensuring compliance with automotive electronic component standards.
- High ESD protection capability exceeding 8 kV via human body model and 800 V via machine model.
- Tight voltage tolerance of ±2% for precise regulation requirements.
Applications
- Automotive circuit protection and voltage clamping
- Precision voltage reference generation
- Overvoltage protection in sensitive signal lines
Procurement Notes
Verify that the ordering suffix matches the required tape-and-reel quantity and packaging format. Confirm RoHS compliance status and AEC-Q101 qualification requirements against specific project specifications before finalizing procurement orders.
Selection Notes
Select this variant when a ±2% voltage tolerance is mandatory rather than the standard ±5%. Ensure the application requires the AEC-Q101 automotive grade qualification. Verify that the 12 V nominal breakdown voltage aligns with the target circuit design parameters.
Part Context
This component belongs to the AZ23 series of small-signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series offers various voltage grades and tolerance options packaged in the space-efficient SOT-23 form factor suitable for high-density PCB layouts.
Replacement Considerations
AZ23B12-E3-18
FAQ
What is the difference between the HE3_A and E3 suffixes?
The HE3_A suffix indicates that the device is AEC-Q101 qualified for automotive applications, whereas the E3 suffix denotes the commercial grade version without this specific automotive qualification.
How does the B suffix affect the electrical performance?
The B suffix specifies a tighter Zener voltage tolerance of ±2%, compared to the C suffix which provides a standard tolerance of ±5%.
What is the maximum power dissipation on an FR-4 board?
The maximum power dissipation is 300 mW when mounted on an FR-4 board with the recommended soldering footprint.
