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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 43V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：43 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 32 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 AZ23B43-E3-08 is a dual common anode Zener diode array from the Vishay AZ23 series, housed in a surface-mount SOT-23 package. It features a nominal Zener voltage of 43 V with a tight tolerance of ±2%. The device operates at a test current of 2 mA and dissipates up to 500 mW on lead-mounted configurations or 300 mW on FR-4 boards. Electrical characteristics include a maximum reverse leakage current of 50 nA at 32 V and a dynamic resistance of 97 Ω at 2 mA. It supports an operating temperature range from -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration for space-efficient circuit designs
- Tight ±2% Zener voltage tolerance for precision applications
- High ESD protection capability exceeding 8 kV (HBM) and 800 V (MM)
- RoHS-compliant commercial grade construction
Applications
- Precision voltage reference circuits requiring dual stable voltages
- ESD protection interfaces in sensitive electronic assemblies
- Voltage clamping and regulation in compact surface-mount layouts
Procurement Notes
Verify the specific ordering code suffix against project requirements. The '-08' designation indicates standard commercial packaging on an 8 mm tape and reel. Confirm that the component meets RoHS compliance standards required by the manufacturing facility. Ensure the selected variant aligns with the intended thermal management strategy for the final assembly.
Selection Notes
Select this part when a dual Zener array with high voltage accuracy is needed in a small footprint. The ±2% tolerance distinguishes it from the standard ±5% 'C' series variants. Consider the 300 mW power dissipation limit on PCBs versus the 500 mW limit on leads when designing thermal paths. Verify compatibility with automated pick-and-place equipment using the SOT-23 outline.
Part Context
This component belongs to the Vishay AZ23 series of small signal Zener diodes. The series offers a wide range of Zener voltages from 2.2 V to 75 V in both single and dual common anode configurations. The 'B' suffix denotes the tighter ±2% tolerance grade, while the 'E3' indicates RoHS compliance. These devices are designed for general-purpose voltage regulation and protection in consumer and industrial electronics.
Replacement Considerations
AZ23B43-E3-18
FAQ
What is the difference between the AZ23B43 and AZ23C43 variants?
The primary difference is the voltage tolerance. The AZ23B43 has a ±2% tolerance, whereas the AZ23C43 has a standard ±5% tolerance.
How does the power dissipation rating change based on mounting?
The total power dissipation is rated at 500 mW when mounted on leads, but it reduces to 300 mW when mounted on an FR-4 board with the recommended soldering footprint.
What is the maximum reverse leakage current specified for this device?
The maximum reverse leakage current is 50 nA, measured at a reverse voltage of 32 V.
