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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 51V SOT-23-3
- Series：AZ23-G
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：51 V
- Tolerance：±2%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 38 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 AZ23B51-G3-18 is a dual common anode silicon planar Zener diode array from the Vishay AZ23-G series, housed in a SOT-23 surface-mount package. It provides two independent Zener diodes sharing a common anode terminal. The nominal Zener voltage is 51 V with a tight tolerance of ±2%. Electrical characteristics are measured at a test current of 2 mA for the primary parameter and 0.5 mA for secondary parameters. The device supports a maximum power dissipation of 300 mW on a standard FR-4 board and operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual common anode configuration allows for compact circuit design using a single shared reference point.
- Tight voltage tolerance of ±2% ensures high precision for sensitive regulation applications.
- Robust ESD protection capability exceeding 8 kV via human body model standards.
Applications
- Precision voltage reference circuits requiring dual stable potentials.
- Over-voltage protection stages utilizing the common anode topology.
- Signal clamping applications in communication equipment.
Procurement Notes
Verify the specific ordering suffix '-18' confirms the 10,000-unit reel packaging format. Confirm RoHS compliance status matches current manufacturing revisions. Ensure the component marking code 'DG2' aligns with incoming inspection requirements before assembly.
Selection Notes
Select this part when a dual Zener array with tighter than standard tolerance is required. The ±2% grading distinguishes it from the standard ±5% 'C' grade variants. Verify that the 51 V breakdown voltage fits the specific circuit threshold needs without external adjustment.
Part Context
This component belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 2.2 V to 75 V. The 'B' designation specifically indicates the 2% tolerance bin within the product family.
Replacement Considerations
AZ23C51-G3-18
FAQ
What is the marking code for the AZ23B51-G3-18?
The marking code printed on the device is DG2.
How does the test current differ between primary and secondary specifications?
Primary Zener voltage is tested at 2 mA, while secondary parameters like reverse leakage are specified at 0.5 mA.
Is this component AEC-Q101 qualified?
AEC-Q101 qualification is available for the series, but must be requested directly from the manufacturer as it is not standard for all ordering codes.
