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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 3.9V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：3.9 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：95 Ohms
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-55°C ~ 150°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B3V9-E3-18 is a dual common anode silicon planar Zener diode array from Vishay, housed in a surface-mount SOT-23 package. It provides two independent Zener diodes sharing a common anode terminal within a single compact footprint. The nominal Zener voltage is 3.9 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 1 µA at 3 V and a dynamic resistance of 90 Ω measured at a test current of 5 mA. The device supports a maximum power dissipation of 300 mW on a standard FR-4 board and operates across a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration for space-efficient circuit design
- Tight voltage tolerance of ±2% for precision regulation applications
- ESD protection capability exceeding 8 kV via human body model
Applications
- Voltage reference circuits requiring precise low-voltage rails
- Transient voltage suppression in signal conditioning paths
- Overvoltage protection for sensitive input stages
Procurement Notes
Verify the specific suffix 'E3' confirms RoHS compliance and lead-free status as per Vishay standards. Confirm the '-18' suffix indicates the 10,000-unit reel packaging format required for your production volume. Ensure the ordering code matches the exact ±2% tolerance grade designated by the 'B' character in the part number.
Selection Notes
Select this component when a dual-diode solution is necessary but board space is constrained. The ±2% tolerance makes it suitable for applications demanding tighter voltage accuracy than standard ±5% devices. Verify that the 300 mW power rating on FR-4 meets the thermal requirements of the target application environment.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of standardized voltages from 2.2 V to 75 V. The AZ23B variant specifically denotes the tighter ±2% tolerance grading compared to the standard ±5% 'C' grading.
Replacement Considerations
AZ23B3V9-E3-08 (Same electrical specs, different 3000-unit reel packaging)
FAQ
What is the marking code for the AZ23B3V9?
The marking code printed on the device body is DD5.
Does the AZ23B3V9-E3-18 meet automotive qualification standards?
No, the base E3 version is commercial grade. Automotive qualification requires the HE3_A suffix (e.g., AZ23B3V9-HE3_A-18).
What is the typical temperature coefficient for this voltage?
The temperature coefficient ranges from -7 to -3 x 10^-4 /°C at the test current of 5 mA.
