DZ23C43-E3-18

Overview

The DZ23C43-E3-18 is a silicon planar Zener diode from the Vishay DZ23 series, housed in an SOT-23 surface-mount package. It features a nominal Zener voltage of 43 V with a standard tolerance of ±5 %. The device operates at a test current of 2 mA and provides a maximum reverse leakage current of 0.05 µA at 32 V. Dynamic resistance is specified at 97 Ω (at IZT1) and 375 Ω (at IZT2). It supports a power dissipation of up to 500 mW and functions within a temperature range of -55 °C to +150 °C.

Feature Summary

• Dual-element common cathode configuration for space-efficient circuit designs
• ESD protection capability exceeding 8 kV via human body model standards
• RoHS-compliant commercial grade construction without automotive qualification

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in signal conditioning paths
• Clamping applications in low-power electronic assemblies

Procurement Notes

Verify the specific ordering suffix against official documentation before acquisition. Confirm that the E3 designation aligns with required RoHS compliance standards for your manufacturing process. Ensure the reel quantity matches production requirements. Validate that the component lacks AEC-Q101 automotive qualification if such certification is mandatory for the target application environment.

Selection Notes

Select this component when a 43 V regulation point is required in a compact SOT-23 footprint. Consider the 2 mA test current requirement for biasing networks. Evaluate the dynamic resistance specifications against noise sensitivity needs. Verify thermal management capabilities given the 500 mW absolute maximum rating under free-air conditions.

Part Context

This part belongs to the Vishay DZ23 series of small signal Zener diodes. The series offers various voltage grades according to the E24 standard. The base part number indicates a commercial grade product compliant with RoHS directives. Other variants in the series include higher voltage ratings and automotive-qualified options with different suffixes.

Replacement Considerations

Direct substitutes within the same series include other DZ23C parts with similar voltage ratings. Cross-referencing requires matching the SOT-23 package and electrical characteristics. Automotive-grade equivalents may require the HE3_A suffix variant.