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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-HE3-08 is a dual common-anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 27 V with a tight tolerance of ±2%. The device operates within an ambient temperature range of -55 °C to +150 °C and dissipates up to 300 mW on an FR-4 board. Key electrical parameters 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. It is housed in a compact SOT-23 surface-mount package.
Feature Summary
- Dual common-anode configuration for space-efficient circuit designs
- High precision ±2% Zener voltage tolerance
- Automotive-grade AEC-Q101 qualification
- Robust ESD protection exceeding 8 kV (HBM) and 800 V (MM)
Applications
- Voltage reference circuits requiring high stability
- Over-voltage protection stages in automotive electronics
- Signal conditioning and clamping applications
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm compliance requirements. The HE3 designation indicates RoHS compliance and AEC-Q101 qualification, distinguishing it from commercial grade variants. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee component authenticity and traceability.
Selection Notes
Select this component when a precise 27 V reference is required in a dual-diode topology. The ±2% tolerance makes it suitable for applications demanding tighter voltage regulation than standard ±5% devices. Verify that the 300 mW power dissipation rating aligns with the thermal management capabilities of the target PCB footprint.
Part Context
This part belongs to the AZ23 series of small signal silicon planar Zener diodes. The series offers a wide range of graded voltages from 2.2 V to 75 V. The 'B' suffix specifically denotes the ±2% tolerance band, while the 'HE3' suffix confirms automotive qualification and lead-free construction.
Replacement Considerations
AZ23B27-E3-08
FAQ
What is the difference between the AZ23B27-HE3-08 and AZ23B27-E3-08?
The AZ23B27-HE3-08 is qualified to the AEC-Q101 automotive standard, whereas the AZ23B27-E3-08 is a commercial grade device.
How does the 'B' suffix affect the electrical characteristics?
The 'B' suffix indicates a Zener voltage tolerance of ±2%, providing higher precision compared to the standard ±5% tolerance found in parts with the 'C' suffix.
What is the maximum operating junction temperature?
The maximum operating junction temperature is 150 °C.
