DZ23C51-G3-18

Overview

The DZ23C51-G3-18 is a dual common cathode small signal Zener diode array from the Vishay DZ23-G series, housed in an SOT-23 surface-mount package. It provides two independent Zener elements with a nominal voltage of 51 V and a 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 50 μA at 38 V and a dynamic resistance of 100 Ω at a test current of 2 mA.

Feature Summary

• Dual common cathode configuration integrating two Zener elements in a single compact SOT-23 package
• Silicon planar construction with standard E24 graded Zener voltages and ±5 % tolerance
• ESD protection capability exceeding 8 kV via human body model and 800 V via machine model

Applications

• Voltage reference circuits requiring dual regulated rails
• Overvoltage protection for sensitive input lines
• Clamping applications in low-power signal conditioning

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. The '-18' suffix indicates units are supplied in reels of 10,000 on 13-inch tape. Confirm RoHS compliance status and material categorization directly with the manufacturer or authorized distributors before finalizing procurement orders.

Selection Notes

Select this component when a dual Zener array is required in a minimal footprint. Ensure the operating current remains within the specified test conditions to maintain the ±5 % voltage accuracy. Verify that the thermal resistance constraints allow for adequate heat dissipation under continuous load conditions.

Part Context

This part belongs to the DZ23-G series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of Zener voltages from 2.2 V to 75 V in the SOT-23 package. The 'G3' designation signifies green commercial grade materials compliant with environmental standards.

Replacement Considerations

Direct replacements within the same family include DZ23C51-E3-18 and DZ23C51-G3-08. These variants share identical electrical specifications but differ in packaging quantities and reel dimensions.