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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 75V SOT-23-3
- Series：AZ23
- Mfr：Vishay
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：75 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：250 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 56 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The Vishay AZ23B75-HE3_A-18 is a dual common anode silicon planar Zener diode array housed in an SOT-23 package. It features a nominal Zener voltage of 75 V with a tight tolerance of ±2%. The device is AEC-Q101 qualified for automotive applications and operates within a junction temperature range of -55 °C to +150 °C. Electrical characteristics include a maximum reverse leakage current of 56 μA at 70 V, a dynamic resistance (ZZ) of 250 Ω at the test current of 2 mA, and a temperature coefficient ranging from 10 to 12 x 10⁻⁴/°C.
Feature Summary
- Dual common anode configuration providing two independent Zener references in a single compact surface-mount package.
- High precision voltage grading with ±2% tolerance indicated by the 'B' designation in the ordering code.
- Automotive-grade reliability certified under AEC-Q101 standards with robust ESD protection capabilities.
Applications
- Voltage reference circuits requiring precise dual-channel regulation in automotive electronics.
- Over-voltage protection stages utilizing the common anode topology for efficient clamping.
- Signal conditioning networks where stable biasing against high-voltage transients is required.
Procurement Notes
Verify that the specific part number matches the required tolerance grade and qualification status. Confirm the suffix indicates the correct reel packaging format and RoHS compliance level. Ensure the component meets the environmental operating requirements for the intended deployment environment before finalizing procurement orders.
Selection Notes
Select this variant when a strict ±2% voltage tolerance is mandatory for the 75 V rating. The HE3_A suffix denotes AEC-Q101 qualification, distinguishing it from commercial grade options. Consider the 250 Ω dynamic resistance value for circuit stability requirements at the specified test current conditions.
Part Context
This component belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers a wide range of voltages from 2.2 V to 75 V in both 5% and 2% tolerance grades. The AZ23B75-HE3_A-18 specifically represents the high-precision, automotive-qualified segment of this lineup.
Replacement Considerations
Direct replacements must match the 75 V nominal voltage, ±2% tolerance, and SOT-23 package. Verify that any substitute also holds AEC-Q101 qualification if automotive reliability is required. Cross-reference dynamic resistance and leakage specifications to ensure circuit compatibility.
FAQ
What does the 'B' indicate in the AZ23B75-HE3_A-18 ordering code?
The 'B' indicates a standard Zener voltage tolerance of ±2%, replacing the 'C' which denotes ±5% tolerance.
Is the AZ23B75-HE3_A-18 suitable for automotive applications?
Yes, the HE3_A suffix confirms that the device is AEC-Q101 qualified for automotive use.
What is the typical dynamic resistance of this device?
The dynamic resistance (ZZ) is specified as 250 Ω at a test current of 2 mA.
