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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)：90 Ohms
- Current - Reverse Leakage @ Vr：3 µA @ 1 V
- Operating Temperature：150°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23B4V3-HE3_A-18 is a silicon planar Zener diode array from the AZ23 series, manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration within a SOT-23 surface-mount package. The nominal Zener voltage is 4.3 V with a tight tolerance of ±2%. It operates at a test current of 5 mA and supports a maximum power dissipation of 300 mW on an FR-4 board. The device is AEC-Q101 qualified for automotive applications and offers high ESD protection exceeding 8 kV (HBM).
Feature Summary
- Dual common anode Zener diode array in a compact SOT-23 package.
- AEC-Q101 qualified for automotive reliability standards.
- High electrostatic discharge (ESD) capability exceeding 8 kV via human body model.
- RoHS-compliant construction with lead-free termination.
Applications
- Automotive electronic circuits requiring voltage regulation.
- Protection against overvoltage transients in sensitive signal lines.
- Reference voltage generation in battery-powered devices.
Procurement Notes
Verify that the ordering code matches AZ23B4V3-HE3_A-18 to ensure the correct combination of ±2% tolerance, HE3_A automotive qualification, and 10,000-unit reel packaging. Confirm RoHS compliance status and check for any specific handling requirements related to moisture sensitivity level 1 during storage and assembly processes.
Selection Notes
Select this component when a precise 4.3 V reference or clamp is needed in space-constrained designs. The B suffix ensures tighter voltage tolerance compared to C variants. Ensure the application environment stays within the specified operating temperature range of -55°C to +150°C and verify that the thermal resistance limits are not exceeded during operation.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes. The series provides a wide range of standard Zener voltages from 2.2 V to 75 V. The HE3_A suffix indicates AEC-Q101 qualification and RoHS compliance, distinguishing it from commercial grade E3 versions. The -18 suffix specifies tape-and-reel packaging with 10,000 units per reel.
Replacement Considerations
AZ23B4V3-E3-18: Commercial grade version without AEC-Q101 qualification but identical electrical characteristics.
FAQ
What is the dynamic resistance of the AZ23B4V3-HE3_A-18?
The maximum dynamic resistance (ZZ) at the test current of 5 mA is 90 Ohms.
How does the marking code appear on the device?
The marking code for the AZ23B4V3 variant is DD6.
What is the reverse leakage current specification?
The maximum reverse leakage current is 3 μA when measured at a reverse voltage of 1 V.
