DZ23C4V7-HE3-18

Overview

The DZ23C4V7-HE3-18 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 4.7 V with a standard 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 reverse leakage current of 3 μA at 5 V and a dynamic resistance of 78 Ω at a test current of 2 mA.

Feature Summary

• Silicon planar construction for reliable voltage regulation
• ESD protection capability exceeding 8 kV via human body model
• RoHS-compliant commercial grade material categorization

Applications

• Voltage reference circuits requiring stable bias points
• Clamping applications for transient voltage suppression
• General-purpose voltage regulation in compact PCB layouts

Procurement Notes

Verify the specific ordering suffix '-18' confirms the 10,000-unit reel packaging format before procurement. Ensure that the AEC-Q101 qualification status aligns with project requirements, as this designation typically applies to the HE3_A variant rather than the base E3 version. Confirm compliance documentation matches the intended market regulations.

Selection Notes

Select this component when a 4.7 V reference is needed in a small SOT-23 footprint. Consider the 300 mW thermal limit on FR-4 boards for power budgeting. Verify if automotive-grade AEC-Q101 qualification is required, noting that the HE3_A suffix denotes this qualification within the series.

Part Context

This part belongs to the Vishay DZ23 series of small signal Zener diodes. The series offers a wide voltage range from 2.2 V to 75 V in the SOT-23 package. The DZ23C4V7-HE3-18 specifically represents the 4.7 V variant packaged in 13-inch tape reels containing 10,000 units per reel.

Replacement Considerations

Cross-reference with other manufacturers offering SOT-23 Zener diodes with 4.7 V nominal voltage and similar dynamic resistance values. Verify pinout compatibility and thermal resistance specifications to ensure equivalent performance in existing designs.