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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：±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-HE3-18 is a dual common anode silicon planar Zener diode array from the AZ23 series, manufactured by Vishay General Semiconductor. It features a nominal Zener voltage of 4.7 V with a ±5% tolerance and operates within a test current range of 2 to 5 mA. The device provides a maximum reverse leakage current of 3 µA at 5 V and exhibits a dynamic resistance of 78 Ω at 2 mA. Packaged in a surface-mount SOT-23 housing, it supports power dissipation up to 500 mW on leads and 300 mW on FR-4 boards. The component is AEC-Q101 qualified for automotive applications and functions reliably across an operating temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration integrates two Zener diodes into a single compact package.
- AEC-Q101 qualification ensures compliance with automotive electronics reliability standards.
- ESD protection capability exceeds 8 kV via human body model and 800 V via machine model.
Applications
- Automotive electronic circuits requiring robust voltage regulation
- Clamping and protection against electrostatic discharge events
- Reference voltage generation in precision analog signal processing
Procurement Notes
Verify that the ordering code matches the specific suffix requirements for tape-and-reel packaging and AEC-Q101 qualification. Confirm RoHS compliance status and material categorization details directly with the manufacturer or authorized distributors before finalizing procurement orders.
Selection Notes
Select this component when a dual Zener array with common anode topology is required for space-constrained designs. Ensure the application voltage aligns with the 4.7 V nominal rating and verify that the thermal management strategy accommodates the specified junction-to-lead thermal resistance values under expected load conditions.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes offered by Vishay Semiconductors. The series encompasses various voltage grades standardized according to the international E24 series, providing engineers with a broad selection of options for general-purpose voltage reference and protection tasks in commercial and industrial environments.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official replacement lists or contact Vishay technical support for verified alternatives if this specific part number becomes unavailable.
FAQ
What is the dynamic resistance of the AZ23C4V7-HE3-18?
The dynamic resistance (ZZ) is specified as a maximum of 78 Ω when tested at a current of 2 mA.
Is the AZ23C4V7-HE3-18 suitable for automotive applications?
Yes, the HE3 suffix indicates that the device is AEC-Q101 qualified, making it suitable for automotive electronic applications.
What is the maximum reverse leakage current for this device?
The maximum reverse leakage current (IR) is 3 µA when measured at a reverse voltage of 5 V.
