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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 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 AZ23B18-HE3-08 is a dual common anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a tight tolerance of ±2%. The device operates within a junction temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. It is AEC-Q101 qualified, RoHS compliant, and housed in a compact SOT-23 package.
Feature Summary
- Dual common anode configuration for space-efficient circuit designs
- AEC-Q101 qualification ensuring automotive-grade reliability
- High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
- Tight ±2% Zener voltage tolerance for precision applications
Applications
- Automotive electronic circuits requiring robust voltage regulation
- Precision reference voltage generation in sensitive instrumentation
- ESD protection stages in high-reliability signal processing paths
Procurement Notes
Verify the specific ordering suffix HE3_A-08 against official documentation to confirm AEC-Q101 automotive qualification status. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability throughout the supply chain.
Selection Notes
Select this component when a dual common anode topology is required alongside strict ±2% voltage tolerance. Verify that the 300 mW power dissipation rating on standard PCB footprints meets the thermal requirements of the target application environment.
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' suffix denotes the lead-free and halogen-free compliant variant within the product family.
Replacement Considerations
AZ23B18-HE3_A-08
FAQ
What is the dynamic resistance of the AZ23B18-HE3-08?
The maximum dynamic resistance (ZZ) at the test current IZT1 of 5 mA is 45 Ω.
Does the AZ23B18-HE3-08 meet automotive standards?
Yes, the device is AEC-Q101 qualified, making it suitable for automotive applications.
What is the reverse leakage current specification?
The maximum reverse leakage current (IR) is specified as 0.05 μA at a reverse voltage (VR) of 14 V.
