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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：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B27-E3-18 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 at a test current of 2 mA and provides a maximum dynamic resistance of 80 Ω. Rated for a maximum power dissipation of 300 mW on an FR-4 board, it supports an operating temperature range from -55 °C to +150 °C. Packaged in a compact SOT-23 (TO-236-3) surface-mount housing, this component is supplied in taped reels of 10,000 units.
Feature Summary
- Dual common anode configuration allows independent regulation using two Zener junctions within a single package.
- Tight ±2% voltage tolerance ensures precise reference levels suitable for sensitive analog circuits.
- High thermal stability across a wide operating temperature range from -55 °C to +150 °C.
Applications
- Precision voltage reference generation
- Over-voltage protection circuits
- Clamping applications in signal conditioning
Procurement Notes
Verify the specific ordering code suffix against official documentation to confirm packaging quantity and RoHS compliance status. Ensure that the procurement channel sources directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the full part number with the latest Vishay datasheet revision to validate current production status and any potential obsolescence notices before finalizing orders.
Selection Notes
Select the AZ23B27-E3-18 when a dual Zener array with high precision is required in a minimal footprint. The ±2% tolerance distinguishes it from standard ±5% variants. Verify that the 300 mW power dissipation rating aligns with the thermal design of the target application. Confirm that the SOT-23 package dimensions fit the available PCB space and soldering constraints.
Part Context
This component belongs to the AZ23 series of small signal Zener diodes produced by Vishay Semiconductors. The series offers a broad range of Zener voltages from 2.2 V to 75 V in both commercial and automotive grades. The 'B' designation indicates the tighter ±2% tolerance variant, while the 'E3' suffix denotes RoHS compliance. These devices are designed for general-purpose voltage regulation and protection tasks.
Replacement Considerations
AZ23B27-E3-08
FAQ
What is the dynamic resistance of the AZ23B27-E3-18?
The maximum dynamic resistance (ZZ) at the test current of 2 mA is 80 Ω.
Does the AZ23B27-E3-18 have AEC-Q101 qualification?
No, the base P/N-E3 is a commercial grade device. Automotive-grade versions require the HE3_A suffix.
What is the reverse leakage current specification?
The maximum reverse leakage current is 0.05 μA at a reverse voltage of 20 V.
