DZ23C11-HE3-18

Overview

The DZ23C11-HE3-18 is a dual common cathode Zener diode array manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 11 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 300 mW and exhibits a Zener impedance of 20 Ohms. Designed for surface mount applications, it utilizes the SOT-23-3 package (TO-236-3/SC-59). The component operates within a junction temperature range of -55°C to +150°C and complies with RoHS standards.

Feature Summary

• Dual common cathode configuration integrates two Zener diodes in a single compact package.
• High thermal stability supports operation across an extended industrial temperature range.
• Lead-free construction ensures compliance with environmental directives.

Applications

• Voltage reference circuits requiring stable dual rails
• Over-voltage protection for sensitive signal lines
• Clamping applications in portable electronic devices

Procurement Notes

Verify the specific suffix HE3 confirms lead-free termination and halogen-free status when sourcing. Confirm the -18 suffix indicates tape-and-reel packaging compatible with automated assembly equipment. Cross-reference the manufacturer part number against current datasheets to ensure no recent design changes or obsolescence notices affect availability or specifications.

Selection Notes

Select this component where space constraints necessitate a dual-diode solution in an SOT-23 footprint. Ensure the circuit design accounts for the 300 mW power rating and the specific 11 V breakdown voltage. Verify that the 20 Ohm impedance meets the dynamic regulation requirements of the application compared to single discrete diodes.

Part Context

This part belongs to the DZ23 series of dual Zener arrays from Vishay. It shares the SOT-23-3 form factor with variants offering different voltage ratings and configurations, such as common anode types. The HE3 suffix denotes a specific terminal finish and environmental compliance level distinct from E3 or G3 suffixes within the same family.

Replacement Considerations

Publicly confirmed substitutes include AZ23C11-G3-18 and AZ23C11-E3-18. These alternatives share identical electrical characteristics and pinout but may differ in packaging or termination specifications. Verify functional equivalence before implementation.