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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)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 15 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 AZ23B20-HE3-08 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 nA at 15 V and a dynamic resistance of 220 Ω measured at a test current of 5 mA. The device supports a power dissipation of up to 500 mW, operates within a temperature range of -55 °C to +150 °C, and complies with RoHS standards.
Feature Summary
- Dual common anode configuration for integrated circuit protection
- High precision ±2% Zener voltage tolerance
- ESD protection exceeding 8 kV via human body model
- Automotive-grade AEC-Q101 qualification
Applications
- Voltage reference circuits requiring high stability
- Over-voltage protection for sensitive electronic components
- Clamping applications in automotive 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 procurement channel sources genuine components directly from authorized distributors or the manufacturer to guarantee compliance with RoHS directives and AEC-Q101 automotive standards.
Selection Notes
Select this component when a precise 20 V reference with strict ±2% tolerance is required in a compact SOT-23 footprint. The dual common anode structure allows for efficient space utilization in multi-channel designs. Consider the thermal resistance parameters if operating near the maximum junction temperature limits.
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' variant. The 'HE3' suffix denotes a lead-free, halogen-free, and green-compliant product formulation suitable for environmentally conscious manufacturing processes.
Replacement Considerations
AZ23B20-E3-08
FAQ
What is the ESD protection rating for the AZ23B20-HE3-08?
The device provides an ESD capability greater than 8 kV according to the human body model and greater than 800 V according to the machine model, as per AEC-Q101 standards.
How does the HE3 suffix affect the electrical performance?
The HE3 suffix indicates a lead-free, halogen-free, and green-compliant material composition. It does not alter the fundamental electrical characteristics or pinout compared to other variants in the same series.
What is the maximum power dissipation on an FR-4 board?
When mounted on an FR-4 board with the recommended soldering footprint, the maximum power dissipation is rated at 300 mW.
