AZ23C3V9-G3-18

Overview

The AZ23C3V9-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 within a single compact footprint. The nominal Zener voltage is 3.9 V with a standard tolerance of ±5%. Electrical characteristics are defined at a test current of 5 mA, featuring a maximum reverse leakage current of 3 µA and a dynamic resistance of 90 Ω. The device supports an operating temperature range from -55 °C to +150 °C and is rated for 300 mW power dissipation on a recommended FR-4 board.

Feature Summary

• Dual common anode configuration integrates two Zener diodes into a single component to reduce board space.
• Graded Zener voltages follow the international E24 standard for consistent selection across designs.
• ESD protection capability exceeds 8 kV via human body model and 800 V via machine model per AEC-Q101.

Applications

• Voltage reference circuits requiring dual stable potential levels
• Input protection for differential signal lines
• Clamping applications in low-voltage digital logic interfaces

Procurement Notes

Verify the specific suffix '-G3-18' against the manufacturer's latest documentation to confirm packaging details and compliance status. Confirm that the commercial grade designation aligns with project requirements, as automotive-grade variants require explicit qualification requests. Ensure sourcing channels provide traceability for RoHS3 compliance definitions.

Selection Notes

Select this part when a dual Zener solution with a common anode topology is required in a SOT-23 form factor. The ±5% tolerance suits general-purpose regulation where tight precision is not critical. Verify that the 90 Ω dynamic resistance meets the noise and stability requirements of the target application circuit.

Part Context

This component belongs to the AZ23-G series of small signal Zener diodes manufactured by Vishay General Semiconductor - Diodes Division. The series offers a wide range of graded voltages from 2.2 V to 75 V in both 5% ('C') and 2% ('B') tolerance options. The 'G3' suffix indicates green, commercial-grade construction compliant with material categorization standards.

Replacement Considerations

Parametric equivalents include other dual common anode Zener arrays in SOT-23 packages with similar 3.9 V ratings. Verify pinout compatibility and thermal resistance characteristics before substitution. Cross-reference with Vishay's official substitute list or consult authorized distributors for direct replacements.