DZ23C33-HE3-08

Overview

The Vishay DZ23C33-HE3-08 is a silicon planar Zener diode from the DZ23 series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 33 V with a tolerance of ±5 %. The device operates at a test current of 2 mA and features a maximum reverse leakage current of 50 nA at 38 V. Dynamic resistance is specified at 80 Ω, with a temperature coefficient ranging from +8 to +10 x 10⁻⁴/°C. Qualified under AEC-Q101 standards, it supports an operating temperature range from -55 °C to +150 °C.

Feature Summary

• Dual common cathode configuration within a compact SOT-23 footprint
• AEC-Q101 automotive qualification ensuring reliability in harsh environments
• ESD protection capability exceeding 8 kV via human body model

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection for sensitive electronic components
• Clamping applications in automotive-grade systems

Procurement Notes

Verify that the ordering code matches the HE3 suffix to confirm AEC-Q101 qualification status. Ensure the tape and reel packaging aligns with automated assembly requirements. Cross-reference the specific voltage grading against E24 standards to validate circuit compatibility before finalizing procurement orders.

Selection Notes

Select this component when a dual common cathode Zener array is required in a small SMD form factor. The HE3 variant is necessary for automotive applications demanding AEC-Q101 compliance. Evaluate the thermal resistance characteristics against the expected power dissipation limits on the FR-4 board to ensure safe junction temperatures during operation.

Part Context

This part belongs to the DZ23 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series offers a wide range of graded voltages from 2.2 V to 75 V. The HE3 designation indicates RoHS compliance and automotive qualification, distinguishing it from the commercial grade E3 variants within the same physical package family.

Replacement Considerations

Direct substitutes include other DZ23C33 variants such as DZ23C33-E3-08 or DZ23C33-HE3_A-08, provided the specific AEC-Q101 qualification requirement is met. Verify pinout orientation and package dimensions match the existing PCB layout.