DZ23C18-HE3-08

Overview

The DZ23C18-HE3-08 is a Zener diode manufactured by Vishay General Semiconductor. It features a nominal voltage of 18 V with a tolerance of ±5%. The device operates within a maximum power dissipation of 500 mW at 25°C ambient temperature. It utilizes an axial leaded package, specifically the DO-214AC (SMA) form factor, suitable for surface-mount applications. The component supports a maximum operating junction temperature of 175°C and includes RoHS compliance markings.

Feature Summary

• High reliability construction designed for robust performance in demanding electronic circuits
• Compliant with international environmental standards including RoHS directives
• Stable voltage regulation characteristics maintained across specified operating temperature ranges

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in consumer electronics
• Clamping applications in signal processing pathways

Procurement Notes

Verify the specific ordering suffix HE3-08 to confirm the exact packaging configuration and tape-and-reel quantity. Ensure that the procurement documentation explicitly states RoHS compliance status as defined by the manufacturer's current material declarations. Cross-reference the date code on received components against the latest quality notices issued by Vishay to guarantee authenticity and traceability.

Selection Notes

Select this component when a stable 18 V reference is required in space-constrained designs due to its compact SMA footprint. Evaluate the thermal management requirements carefully, as the 500 mW power rating necessitates adequate PCB copper area or heat sinking for sustained operation near maximum ratings. Confirm that the input voltage variations do not exceed the diode's maximum current limits under worst-case conditions.

Part Context

This part belongs to Vishay's HE3 series of super-efficient planar Zener diodes. The HE3 technology utilizes passivated die structures to enhance switching performance and reduce leakage currents compared to standard Zener devices. This series is engineered for high-volume manufacturing environments where consistent electrical parameters and long-term stability are critical for product reliability.

Replacement Considerations

Direct substitutes must match the 18 V nominal voltage, 500 mW power rating, and SMA package dimensions. Verify that alternative manufacturers offer equivalent dynamic impedance and knee voltage specifications to ensure circuit compatibility without redesigning surrounding components.