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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 33V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：33 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 25 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 AZ23C33-HE3-18 is a silicon planar Zener diode from Vishay's AZ23 series, housed in an SOT-23 package. It features a nominal Zener voltage of 33 V with a ±5% tolerance, tested at a current of 2 mA. The device has a maximum reverse leakage current of 0.05 µA at 40 V and dynamic resistances of 80 Ω (at IZT1) and 250 Ω (at IZT2). It operates within a temperature range of -55 °C to +150 °C, dissipates up to 500 mW, and carries AEC-Q101 qualification.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- High ESD protection capability exceeding 8 kV HBM and 800 V MM
- RoHS-compliant construction with halogen-free materials
Applications
- Voltage reference circuits in automotive electronics
- Overvoltage protection stages
- Clamping applications in sensitive signal paths
Procurement Notes
Verify the HE3_A suffix confirms AEC-Q101 qualification and RoHS compliance. Confirm the -18 suffix indicates 10,000 units per reel on 13 mm tape. Ensure the C designation matches the required ±5% voltage tolerance for your specific design constraints.
Selection Notes
Select this component when a 33 V Zener voltage with standard tolerance is required in a compact SOT-23 footprint. Consider the 2 mA test current for low-power biasing scenarios. Verify thermal management requirements against the 500 mW dissipation limit and junction-to-lead thermal resistance specifications.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers various voltage grades according to the E24 standard and includes options for different tolerances and packaging configurations to suit diverse electronic design needs.
Replacement Considerations
Direct substitutes include other AZ23 series variants with matching voltage and tolerance, such as AZ23B33-E3-18 for tighter tolerance or AZ23C33-E3-08 for different reel quantities. Cross-brand replacements require matching Zener voltage, package type, and power dissipation ratings.
FAQ
What is the marking code for the AZ23C33?
The marking code for the AZ23C33 is D67.
Does the HE3 suffix indicate AEC-Q101 qualification?
Yes, the HE3_A suffix indicates that the device is AEC-Q101 qualified.
What is the maximum reverse leakage current at 40 V?
The maximum reverse leakage current is 0.05 µA when tested at 40 V.
