AZ23C4V3-E3-18

Overview

The AZ23C4V3-E3-18 is a silicon planar Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a dual common anode configuration housed in a SOT-23 surface-mount package. The nominal Zener voltage is 4.3 V with a ±5% tolerance, tested at a current of 5 mA. Maximum power dissipation is rated at 300 mW on an FR-4 board and 500 mW with leads clamped. Dynamic resistance (ZZ) is specified at a maximum of 90 Ω at the test current. The device operates within a temperature range of -55 °C to +150 °C and complies with RoHS standards.

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
• Clamping applications for signal line protection
• Power supply monitoring and threshold detection systems

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 component marking code D46 matches the expected part number upon receipt. Confirm compliance requirements such as RoHS status and material categorization before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array with a common anode topology is required in a compact SOT-23 footprint. The ±5% tolerance suits general-purpose regulation tasks where tighter precision is unnecessary. Consider the thermal resistance characteristics and operating temperature limits to ensure reliability under specific load conditions.

Part Context

This device belongs to the AZ23 series of small signal Zener diodes from Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V. Variants are available with different tolerances and AEC-Q101 automotive qualifications. The E3 suffix indicates RoHS compliance for commercial grade applications.

Replacement Considerations

AZ23B4V3-E3-18 provides the same electrical characteristics but with a tighter ±2% tolerance.

FAQ

What is the dynamic resistance of the AZ23C4V3-E3-18?

The maximum dynamic resistance (ZZ) is 90 Ω when tested at the standard test current of 5 mA.

Does the AZ23C4V3-E3-18 have AEC-Q101 qualification?

No, the base P/N-E3 variant is commercial grade. AEC-Q101 qualified versions use the HE3_A suffix.

What is the marking code for this component?

The marking code printed on the device is D46.