DZ23C4V3-HE3_A-18

Overview

The DZ23C4V3-HE3_A-18 is a silicon planar Zener diode from the Vishay DZ23 series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 4.3 V with a tolerance of ±5 %. The device operates within a junction temperature range of -55 °C to +150 °C and supports a maximum power dissipation of 500 mW when mounted on a FR-4 board. It is AEC-Q101 qualified for automotive applications and offers ESD protection exceeding 8 kV via the human body model.

Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• High electrostatic discharge (ESD) capability exceeding 8 kV HBM
• RoHS-compliant construction using silicon planar technology

Applications

• Automotive electronic circuit voltage regulation
• General-purpose voltage reference circuits
• Transient voltage suppression in low-power systems

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer's part number against official Vishay documentation. Confirm that the ordering suffix corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Ensure compliance with RoHS directives and AEC-Q101 qualification status before finalizing procurement orders.

Selection Notes

Select this component when a precise 4.3 V reference is required in space-constrained designs utilizing the SOT-23 footprint. Consider the dynamic resistance and leakage current specifications at the test current to ensure accuracy in sensitive analog applications. Verify thermal management requirements against the specified junction-to-lead thermal resistance for high-density PCB layouts.

Part Context

This component belongs to the DZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series encompasses a wide range of standard Zener voltages graded according to the international E24 standard. All variants share the same physical SOT-23 package dimensions while offering different electrical characteristics tailored for various voltage regulation needs.

Replacement Considerations

Direct replacements must match the 4.3 V nominal voltage, ±5 % tolerance, and SOT-23-3 package. Verify that alternative sources provide equivalent AEC-Q101 qualification if automotive usage is intended. Check for identical pinout configurations to ensure compatibility without redesigning the printed circuit board layout.

FAQ

What is the ESD protection rating for the DZ23C4V3-HE3_A-18?

The device meets AEC-Q101 ESD capability requirements, providing protection greater than 8 kV according to the human body model and greater than 800 V according to the machine model.

How does the power dissipation change based on mounting conditions?

The maximum power dissipation is rated at 500 mW when the thermal resistance from junction to lead is 250 K/W. On an FR-4 board with the recommended soldering footprint, the power dissipation is limited to 300 mW.

What is the marking code for this specific part number?

The marking code for the DZ23C4V3 variant in the DZ23 series is V46.