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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 47V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：47 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 35 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 AZ23B47-E3-18 is a dual common-anode silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It provides two independent voltage regulation channels within a single SOT-23 surface-mount package. The nominal Zener voltage is 47 V with a tight tolerance of ±2%. Each channel operates at a test current of 2 mA and dissipates up to 300 mW on an FR-4 board. The device features low reverse leakage current (50 nA maximum) and dynamic resistance of 97 Ω, ensuring stable performance across an operating temperature range of -55 °C to +150 °C.
Feature Summary
- Dual-channel configuration with a shared common anode for simplified circuit design
- High precision voltage grading with ±2% tolerance for accurate reference applications
- Robust ESD protection capability exceeding 8 kV via human body model standards
- RoHS-compliant commercial grade construction suitable for automated assembly
Applications
- Precision voltage reference circuits requiring dual regulated outputs
- Over-voltage protection stages in sensitive signal processing paths
- Clamping networks for transient suppression in communication interfaces
Procurement Notes
Verify the specific ordering code suffix against project requirements to ensure correct packaging quantities and reel specifications. Confirm that the component meets all applicable environmental compliance standards required for the target market. Cross-reference the manufacturer's latest datasheet revision to validate electrical parameters before finalizing procurement documentation.
Selection Notes
Select this component when precise dual-channel regulation is necessary within a compact footprint. The ±2% tolerance makes it suitable for applications demanding tighter voltage accuracy than standard commercial grades. Ensure the thermal management strategy accommodates the specified power dissipation limits under worst-case ambient conditions.
Part Context
This part belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of standardized voltage options graded according to the international E24 standard. The 'B' designation indicates the tighter ±2% tolerance variant, while the '-E3-18' suffix specifies RoHS compliance and tape-and-reel packaging.
Replacement Considerations
AZ23B47-E3-08
FAQ
What is the dynamic resistance of the AZ23B47-E3-18 at the test current?
The dynamic resistance (ZZ) at the test current of 2 mA is 97 Ω.
Does the AZ23B47-E3-18 require AEC-Q101 qualification for automotive use?
No, the base P/N-E3 is a commercial grade device. Automotive qualification requires the HE3_A suffix.
What is the maximum reverse leakage current specified for this device?
The maximum reverse leakage current is 50 nA at a reverse voltage of 35 V.
