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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 V
- 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 AZ23C18-E3-18 is a dual common-anode Zener diode array from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It provides two independent Zener diodes sharing a common anode terminal. The nominal Zener voltage is 18 V with a tolerance of ±5%, tested at a current of 5 mA. Maximum reverse leakage current is specified as 0.05 µA at 14 V, and dynamic resistance is limited to 45 Ω at the test current. The device operates within a temperature range of -55 °C to +150 °C and dissipates up to 300 mW on a standard FR-4 board.
Feature Summary
- Dual common-anode configuration for space-efficient circuit design
- Zener voltages graded according to international E24 standard
- ESD protection capability exceeding 8 kV via human body model
Applications
- Voltage reference circuits requiring dual rails
- Overvoltage protection for signal lines
- Clamping applications in low-power electronics
Procurement Notes
Verify that the ordering code suffix matches the required tape and reel quantity. The '-18' designation indicates units are supplied in reels of 10,000 on 8 mm tape. Confirm RoHS compliance status and ensure the component meets specific environmental requirements for the intended deployment environment before finalizing orders.
Selection Notes
Select this part when a dual Zener solution with a shared anode is required in a compact footprint. Ensure the application voltage does not exceed the maximum ratings. For tighter voltage tolerances, consider the 'B' variant instead of the 'C' variant. Verify thermal management capabilities if operating near the maximum power dissipation limits.
Part Context
This component belongs to the AZ23 series of small-signal silicon planar Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of standardized Zener voltages from 2.2 V to 75 V. The AZ23C18-E3-18 specifically represents the 18 V nominal voltage option with commercial grade packaging and standard E24 tolerance grading.
Replacement Considerations
AZ23C18-E3-08
FAQ
What is the marking code for the AZ23C18-E3-18?
The marking code for this device is D61.
What is the maximum reverse leakage current specified?
The maximum reverse leakage current is 0.05 µA, measured at a reverse voltage of 14 V.
Does this component support AEC-Q101 qualification?
No, the base P/N-E3 is commercial grade. AEC-Q101 qualified versions use the HE3_A suffix.
