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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 51V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：51 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：180 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 35.7 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 AZ23C51-HE3_A-08 is a dual common anode silicon planar Zener diode array from the Vishay AZ23 series, housed in a SOT-23 surface-mount package. It features a nominal Zener voltage of 51 V with a ±5% tolerance and a maximum power dissipation of 300 mW on an FR-4 board. The device operates within a temperature range of -55 °C to +150 °C and is qualified to AEC-Q101 standards for automotive applications.
Feature Summary
- Dual common anode configuration providing two independent Zener diodes in a single compact package
- AEC-Q101 qualification ensuring reliability for demanding automotive electronic environments
- High electrostatic discharge (ESD) protection capability exceeding 8 kV via human body model
Applications
- Automotive circuit voltage clamping and transient suppression
- Precision reference voltage generation in dual-channel systems
- Over-voltage protection for sensitive input lines
Procurement Notes
Verify that the specific ordering code matches the required tolerance and packaging format. Confirm that the HE3_A suffix indicates the correct AEC-Q101 automotive grade qualification. Ensure the tape and reel specifications align with automated assembly equipment requirements before finalizing procurement orders.
Selection Notes
Select this component when a dual common anode topology is required for space-constrained designs. The 51 V nominal rating suits applications needing precise high-side regulation. Verify that the 300 mW thermal dissipation limit accommodates the expected operating current and ambient temperature conditions without exceeding junction limits.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages from 2.2 V to 75 V. The HE3_A suffix specifically denotes RoHS compliance combined with automotive-grade AEC-Q101 qualification, distinguishing it from commercial grade variants.
Replacement Considerations
AZ23C51-E3-08
FAQ
What is the dynamic resistance at the test current?
The dynamic resistance (ZZ) at the test current of 2 mA is specified as a maximum of 100 Ω.
Does the device meet automotive reliability standards?
Yes, the HE3_A suffix indicates that the device is qualified according to the AEC-Q101 standard for automotive applications.
What is the reverse leakage current specification?
The maximum reverse leakage current is 0.05 μA when measured at a reverse voltage of 38 V.
