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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)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 38 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 AZ23C51-HE3-08 is a silicon planar Zener diode from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a common anode configuration with a nominal Zener voltage of 51 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 500 mW (300 mW on FR-4). Key electrical parameters include a reverse leakage current of 50 μA at 45 V, a dynamic resistance of 100 Ω at 2 mA, and a temperature coefficient ranging from 9 to 11 x 10⁻⁴/°C. It is AEC-Q101 qualified for automotive applications.
Feature Summary
- AEC-Q101 qualified for automotive-grade reliability
- Silicon planar construction with ESD protection exceeding 8 kV HBM
- RoHS-compliant material categorization
Applications
- Automotive circuit protection systems
- Voltage reference circuits requiring stable regulation
- Overvoltage protection in industrial electronics
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm tape-and-reel quantities and packaging standards. Confirm that the HE3 designation aligns with required AEC-Q101 qualification levels for your target application environment before finalizing procurement specifications.
Selection Notes
Select this component when a 51 V Zener voltage with ±5% tolerance is required in a compact SOT-23 footprint. Ensure the design accommodates the specified 100 Ω dynamic resistance and 50 μA leakage current limits under operating conditions. Verify thermal management requirements against the 250 K/W junction-to-lead thermal resistance rating.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide voltage range from 2.2 V to 75 V in the SOT-23 package. The HE3 suffix indicates RoHS compliance and AEC-Q101 qualification, distinguishing it from commercial grade variants.
Replacement Considerations
AZ23C51-E3-08
FAQ
What is the dynamic resistance of the AZ23C51-HE3-08?
The dynamic resistance (ZZ) is 100 Ω, measured at a test current of 2 mA.
Is the AZ23C51-HE3-08 suitable for automotive applications?
Yes, the HE3 variant is AEC-Q101 qualified, making it suitable for automotive environments.
What is the maximum reverse leakage current?
The maximum reverse leakage current is 50 μA, specified at a reverse voltage of 45 V.
