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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：27 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 20 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 AZ23B27-HE3-18 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 two independent Zener elements. The nominal Zener voltage is 27 V with a tight tolerance of ±2%. Electrical characteristics include a maximum reverse leakage current of 50 µA at 20 V and a dynamic resistance of 80 Ω at a test current of 2 mA. The device supports a maximum power dissipation of 300 mW on an FR-4 board and operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common-anode Zener array structure for compact circuit design
- High precision voltage regulation with ±2% tolerance
- Automotive-grade qualification compliant with AEC-Q101 standards
- Robust electrostatic discharge protection exceeding 8 kV human body model
Applications
- Voltage reference circuits requiring precise dual rails
- Overvoltage protection stages in automotive electronics
- Clamping applications in signal conditioning paths
- Transient voltage suppression in communication interfaces
Procurement Notes
Verify that the ordering code matches the specific suffix requirements for tape-and-reel packaging and AEC-Q101 qualification. Confirm RoHS compliance status and material categorization details against the latest manufacturer documentation before finalizing procurement orders.
Selection Notes
Select this component when a dual Zener configuration with high voltage accuracy is required in a small footprint. Ensure the operating environment stays within the specified thermal limits and that the 2 mA test current aligns with the application's biasing conditions.
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 based on the E24 standard, providing designers with flexible options for various voltage regulation needs across commercial and automotive sectors.
Replacement Considerations
AZ23B27-E3-18
FAQ
What is the dynamic resistance of the AZ23B27-HE3-18?
The dynamic resistance (ZZ) is specified as a maximum of 80 Ω at a test current of 2 mA.
Is the AZ23B27-HE3-18 suitable for automotive applications?
Yes, the HE3_A suffix indicates that the device is qualified according to the AEC-Q101 standard for automotive electronics.
What is the maximum reverse leakage current?
The maximum reverse leakage current is 50 µA when measured at a reverse voltage of 20 V.
