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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：50 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 14 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 AZ23B18-E3-08 is a dual common anode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a tight tolerance of ±2%. The device operates within a test current range of 2 to 5 mA and exhibits a maximum reverse leakage current of 0.05 µA at 14 V. Electrical performance includes a dynamic resistance (ZZ) of 45 Ω at the test current and a temperature coefficient ranging from 8 to 9.5 x 10⁻⁴/°C. Rated for surface mount installation in an SOT-23 package, it supports a maximum power dissipation of 300 mW on an FR-4 board and functions across an operating temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration providing two independent Zener references in a single compact package
- High precision voltage grading with ±2% tolerance for stable reference applications
- Robust ESD protection capability exceeding 8 kV via human body model standards
- RoHS-compliant commercial grade silicon planar construction
Applications
- Precision voltage reference circuits requiring dual polarity or split supplies
- Over-voltage protection stages in sensitive signal conditioning paths
- Clamping networks for transient suppression in communication interfaces
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm tape and reel specifications. Ensure that the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Cross-reference the date code and lot number with the latest product change notifications to maintain consistency with the Rev. 1.2 datasheet requirements.
Selection Notes
Select this component when a dual common anode topology is required alongside strict voltage accuracy constraints. The ±2% tolerance distinguishes it from standard ±5% variants, making it suitable for high-precision analog designs. Evaluate the thermal resistance parameters to ensure adequate heat dissipation within the target enclosure design limits.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes produced by Vishay Semiconductors. The series utilizes silicon planar technology and offers a wide range of standardized voltage options. The 'B' designation specifically indicates the tighter ±2% voltage tolerance compared to the 'C' graded counterparts.
Replacement Considerations
AZ23B18-E3-18
FAQ
What is the dynamic resistance value for the AZ23B18-E3-08?
The dynamic resistance (ZZ) is specified as a maximum of 45 Ω at the test current IZT1.
Does the AZ23B18-E3-08 have AEC-Q101 qualification?
No, the base P/N-E3 variant is a commercial grade component. AEC-Q101 qualification is available only for the HE3_A version.
What is the marking code for this specific device?
The marking code assigned to the AZ23B18-E3-08 is DF1.
