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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.7V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：4.7 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：3 µA @ 2 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 AZ23B4V7-HE3_A-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a SOT-23 surface-mount package. It features a nominal Zener voltage of 4.7 V with a tight ±2% tolerance and operates within a temperature range of -55°C to +150°C. The device is AEC-Q101 qualified for automotive reliability and RoHS compliant. Electrical characteristics include a maximum reverse leakage current of 3 µA at 4 V and a dynamic resistance of 78 Ω at a test current of 2 mA.
Feature Summary
- Dual common anode configuration providing two independent Zener elements in a single compact package
- AEC-Q101 qualification ensuring suitability for demanding automotive electronic environments
- High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model
Applications
- Automotive circuit voltage regulation and reference applications
- Protection against overvoltage transients in sensitive signal lines
- Clamping circuits requiring precise low-voltage threshold control
Procurement Notes
Verify that the specific ordering suffix matches the required tape-and-reel quantity and packaging format. Confirm that the component meets the necessary AEC-Q101 qualification standards for your specific application environment. Ensure compatibility with standard lead-free soldering processes as defined by the datasheet thermal specifications.
Selection Notes
Select this variant when a tighter ±2% voltage tolerance is required compared to the standard ±5% 'C' grade devices. Consider the dual common anode topology if space constraints necessitate integrating two regulation points into a single footprint. Verify that the 4.7 V breakdown voltage aligns with the target circuit requirements.
Part Context
This component belongs to the broader AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages based on the E24 series, available in both commercial and automotive grades. The HE3_A suffix specifically denotes the AEC-Q101 qualified version packaged in tape and reel format.
Replacement Considerations
AZ23B4V7-E3-08
FAQ
What is the difference between the AZ23B and AZ23C designations?
The letter indicates the Zener voltage tolerance. 'B' signifies a tighter ±2% tolerance, while 'C' indicates a standard ±5% tolerance.
How does the HE3_A suffix differ from the base E3 suffix?
The HE3_A suffix indicates that the device is AEC-Q101 qualified for automotive applications, whereas the base E3 suffix denotes a commercial grade part.
What is the maximum power dissipation rating?
The absolute maximum power dissipation is 500 mW with a thermal resistance junction-to-lead of 250 K/W, or 300 mW on an FR-4 board with the recommended soldering footprint.
