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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),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：4.7 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：78 Ohms
- Current - Reverse Leakage @ Vr：-
- 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 AZ23C4V7-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 4.7 V with a ±5% tolerance, tested at a current of 5 mA. The device has a maximum dynamic resistance of 78 Ω and a reverse leakage current of 3 μA at 3 V. Rated for a power dissipation of 300 mW on an FR-4 board, it operates within a temperature range of -55 °C to +150 °C. Packaged in a SOT-23 case, this component is AEC-Q101 qualified and RoHS compliant.
Feature Summary
- Dual common anode configuration providing two independent Zener diodes in a single package
- AEC-Q101 automotive qualification ensuring reliability under harsh operating conditions
- ESD protection capability exceeding 8 kV via human body model and 800 V via machine model
- RoHS compliance and material categorization for environmental safety
Applications
- Automotive electronic circuits requiring AEC-Q101 qualified components
- Voltage reference applications utilizing the stable 4.7 V output
- Clamping and protection circuits leveraging high ESD immunity
Procurement Notes
Verify that the ordering code matches the specific suffix requirements for automotive qualification and tape packaging. Confirm the manufacturer's part number against official Vishay documentation to ensure authenticity. Check for any recent product change notifications or obsolescence notices before finalizing procurement plans.
Selection Notes
Select this component when a dual Zener array with common anode topology is required for space-constrained designs. Ensure the 4.7 V nominal voltage aligns with circuit specifications. Consider the 300 mW power dissipation limit on standard PCBs and verify thermal management needs for high ambient temperatures.
Part Context
This device belongs to the AZ23 series of small signal Zener diodes from Vishay. The series offers various voltage options graded according to the E24 standard. The 'HE3' suffix indicates an eco-friendly lead-free finish with matte tin plating, while the '-08' suffix specifies the 3000-unit reel packaging format.
Replacement Considerations
AZ23C4V7-E3-08 (Commercial grade, non-automotive)
FAQ
What is the marking code for the AZ23C4V7-HE3-08?
The marking code for this device is D47.
How does the tolerance differ between the C and B variants in the AZ23 series?
The 'C' variant provides a standard ±5% tolerance, whereas replacing 'C' with 'B' in the ordering code yields a tighter ±2% tolerance.
What is the maximum junction temperature for this component?
The maximum junction temperature (Tj) is rated at 150 °C.
