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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 43V SOT-23
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：43 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 32 V
- Operating Temperature：-55°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The AZ23C43 is a dual SMD Zener diode from the AZ23C series, housed in an SOT-23 package. It features a nominal Zener voltage of 43 V with a range of 40 V to 46 V at a test current (Izt) of 5 mA. The device has a maximum power dissipation of 300 mW and a junction temperature range of -55°C to +150°C. Electrical specifications include a maximum Zener impedance (Zzt) of 100 Ω and a leakage current (Ir) of 0.1 µA at 32 V. The marking code for this specific part number is KDU.
Feature Summary
- Dual configuration designed for automated assembly processes
- RoHS compliant and halogen-free construction
- Moisture sensitivity rated at Level 1 per J-STD-020
Applications
- Low voltage stabilizers or voltage references
- Adapters
- Lighting applications
- On-board DC/DC converter
Procurement Notes
Verify the ordering suffix against the datasheet to confirm packing details. The standard version uses a 7-inch reel, while variants with 'G' indicate green compound packaging. Ensure the selected part matches the required voltage tolerance and thermal characteristics for the intended circuit design before procurement.
Selection Notes
Select the AZ23C43 when a 43 V reference is needed in a compact SOT-23 footprint. Consider the 300 mW power limit and thermal resistance of 420 °C/W for heat management. Verify that the 5 mA test current aligns with the operating conditions of the target application circuit to ensure accurate voltage regulation performance.
Part Context
This component belongs to the AZ23C series, which covers Zener voltages from 2.7 V to 51 V. All parts in this series share the same SOT-23 mechanical outline and general electrical limits, differing primarily in their nominal voltage ratings and corresponding marking codes. The series is optimized for surface-mount technology integration.
Replacement Considerations
Direct substitutes must match the SOT-23 package, 300 mW power rating, and 43 V nominal voltage. Verify that alternative manufacturers provide equivalent Zener impedance and leakage current specifications to maintain circuit stability without redesigning the surrounding components.
