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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 4.3V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：95 Ohms
- Current - Reverse Leakage @ Vr：-
- 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 AZ23B4V3-E3-18 is a silicon planar Zener diode from the Vishay AZ23 series, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 4.3 V with a tight tolerance of ±2%. The device operates at a test current of 5 mA and provides a maximum reverse leakage current of 3 μA at 3 V. Electrical characteristics include a dynamic impedance of 90 Ω and a temperature coefficient ranging from -6 to -1 x 10⁻⁴/°C. It supports a power dissipation of up to 500 mW and functions within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration for efficient circuit design
- High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
- RoHS-compliant commercial grade construction
Applications
- Voltage reference circuits requiring stable low-voltage regulation
- Clamping applications for signal lines and input protection
- Biasing networks in small-signal transistor stages
Procurement Notes
Verify that the ordering code matches the specific suffix requirements for reel size and tolerance. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement. Ensure storage conditions adhere to moisture sensitivity level 1 guidelines to maintain component integrity during assembly processes.
Selection Notes
Select this part when a precise 4.3 V reference is needed with strict tolerance limits. The dual common anode structure allows for flexible connection options in compact layouts. Evaluate thermal management needs based on the 500 mW dissipation rating and ambient operating temperatures to ensure reliable long-term performance.
Part Context
This component belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of standardized voltages graded according to the international E24 standard. The B designation indicates a tighter ±2% voltage tolerance compared to the standard C grade.
Replacement Considerations
AZ23B4V3-E3-08
FAQ
What is the marking code for the AZ23B4V3-E3-18?
The marking code for this device is DD6.
Does the AZ23B4V3-E3-18 have AEC-Q101 qualification?
No, the base P/N-E3 variant is commercial grade and does not carry AEC-Q101 qualification.
What is the maximum reverse leakage current specified?
The maximum reverse leakage current is 3 μA, measured at a reverse voltage of 3 V.
