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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：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23C18-HE3-18 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a ±5% tolerance, tested at a current of 5 mA. The device operates within a temperature range of -55 °C to +150 °C and provides a maximum reverse leakage current of 50 nA at 14 V. Dynamic resistance is specified at 45 Ω (max) at the test current. Packaged in an SOT-23 surface-mount case, it is AEC-Q101 qualified for automotive applications.
Feature Summary
- Dual common anode configuration for efficient space utilization
- AEC-Q101 qualified for automotive reliability standards
- ESD protection exceeding 8 kV human body model rating
Applications
- Automotive electronic circuit protection
- Voltage reference stabilization in compact modules
- Transient voltage suppression in signal lines
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package tape width and reel quantity. Confirm RoHS compliance status and AEC-Q101 qualification requirements prior to procurement. Ensure storage conditions adhere to moisture sensitivity level specifications to prevent package damage during assembly.
Selection Notes
Select this component when a dual Zener array with a precise 18 V nominal breakdown is required in a small footprint. Verify that the 45 Ω dynamic resistance meets the circuit's noise and regulation constraints. Ensure the operating environment stays within the specified -55 °C to +150 °C range for reliable performance.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes from Vishay. The series offers various voltage grades according to the E24 standard. The HE3 suffix indicates a high-efficiency planar die design, while the '18' suffix denotes the 10,000-unit reel packaging format.
Replacement Considerations
AZ23C18-E3-18
FAQ
What is the dynamic resistance of the AZ23C18-HE3-18?
The maximum dynamic resistance (ZZ) at the test current of 5 mA is 45 Ω.
Is the AZ23C18-HE3-18 suitable for automotive applications?
Yes, the HE3 variant is AEC-Q101 qualified for automotive use.
What is the maximum reverse leakage current?
The maximum reverse leakage current is 50 nA when measured at 14 V.
