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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)：45 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 12.6 V
- Operating Temperature：150°C (TJ)
- 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_A-18 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a dual common anode configuration with a nominal Zener voltage of 18 V and a tolerance of ±5%. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 300 mW on an FR-4 board. It is AEC-Q101 qualified for automotive applications and offers high ESD protection capability.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- Dual common anode configuration for space-efficient designs
- High electrostatic discharge (ESD) protection capability
Applications
- Automotive electronic circuits requiring robust voltage regulation
- General-purpose voltage reference applications
- Protection circuits in consumer electronics
Procurement Notes
Verify that the ordering code suffix matches the required tape reel length and quantity. Confirm the HE3_A suffix indicates AEC-Q101 qualification rather than commercial grade. Ensure the C designation aligns with the necessary ±5% voltage tolerance for the specific application requirements.
Selection Notes
Select this component when a dual Zener array in an SOT-23 package is required for automotive or high-reliability environments. Consider the 300 mW power dissipation limit on standard PCB footprints. Verify that the 18 V nominal voltage fits the circuit design constraints and that the common anode topology suits the system architecture.
Part Context
This part belongs to the Vishay AZ23 series of small signal Zener diodes. The series provides various voltage options graded to the E24 standard. The HE3_A suffix specifically denotes RoHS compliance combined with AEC-Q101 qualification, distinguishing it from the standard commercial E3 variants.
Replacement Considerations
AZ23C18-E3-18
FAQ
What does the 'HE3_A' suffix indicate?
It signifies that the device is RoHS-compliant and qualified according to the AEC-Q101 automotive standard.
What is the ESD protection rating?
The device offers human body model protection greater than 8 kV and machine model protection greater than 800 V.
What is the maximum power dissipation on an FR-4 board?
The maximum power dissipation is 300 mW when mounted on an FR-4 board with the recommended soldering footprint.
