AZ23C3V9-E3-18

Overview

The AZ23C3V9-E3-18 is a dual common-anode silicon planar Zener diode array from Vishay, housed in an SOT-23 surface-mount package. It provides two independent Zener diodes with a nominal voltage of 3.9 V and a tolerance of ±5%. The device operates within a junction temperature range of -55 °C to +150 °C and features a maximum power dissipation of 300 mW on an FR-4 board. Electrical characteristics include a test current of 5 mA, a maximum reverse leakage current of 3 μA at 3.6 V, and a dynamic resistance of 90 Ω.

Feature Summary

• Dual common-anode configuration for space-efficient circuit design
• Silicon planar technology ensuring stable voltage regulation
• ESD protection capability exceeding 8 kV via human body model

Applications

• Voltage reference circuits requiring dual regulated rails
• Input protection stages for sensitive electronic components
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm tape-and-reel specifications and minimum order quantities. Ensure that the commercial grade designation aligns with project requirements, as automotive-grade variants utilize different suffixes. Cross-reference the RoHS compliance status with current environmental regulations applicable to the target market.

Selection Notes

Select this component when a dual Zener array with a common anode is required in a compact SOT-23 footprint. The ±5% voltage tolerance suits general-purpose regulation tasks where tight precision is not critical. Evaluate the thermal resistance parameters to ensure adequate heat dissipation under continuous operating conditions.

Part Context

This part belongs to the AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of standardized Zener voltages graded according to the E24 standard. Variants within the series differ primarily in voltage rating, tolerance codes, and qualification levels for automotive applications.

Replacement Considerations

Direct substitutes within the same family include AZ23B3V9-E3-18 for tighter tolerance or AZ23C3V9-HE3_A-18 for AEC-Q101 automotive qualification. Verify pinout compatibility and electrical parameter equivalence before implementation.