DZ23C3V9-E3-08

Overview

The DZ23C3V9-E3-08 is a silicon planar Zener diode from the Vishay DZ23 series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 3.9 V with a ±5% tolerance at a test current of 5 mA. The device features a maximum reverse leakage current of 3 µA and a dynamic resistance of 90 Ω at the test current. It operates within a temperature range of -55 °C to +150 °C and has a power dissipation rating of 300 mW on an FR-4 board. The component is RoHS-compliant and commercial grade.

Feature Summary

• Silicon planar construction for reliable voltage regulation
• Graded Zener voltages according to the international E24 standard
• ESD capability exceeding 8 kV via human body model and 800 V via machine model

Applications

• Voltage reference circuits requiring stable low-voltage rails
• Clamping applications for signal protection
• General-purpose voltage regulation in compact electronic designs

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's documentation to confirm reel size and minimum order quantity requirements. Ensure that the commercial grade designation aligns with the intended application environment, as AEC-Q101 qualified variants utilize different suffixes. Cross-reference the datasheet revision date to confirm the accuracy of electrical parameters before finalizing procurement specifications.

Selection Notes

Select this component when a precise 3.9 V reference is needed in a small SOT-23 footprint. Consider the 90 Ω dynamic resistance for impedance matching in the circuit design. Verify thermal management capabilities if operating near the 300 mW dissipation limit. Confirm that the ±5% tolerance meets the system's voltage accuracy requirements without additional trimming.

Part Context

This part belongs to the Vishay DZ23 series of small signal Zener diodes. The series offers a wide range of nominal voltages from 2.2 V to 75 V, all sharing the same SOT-23 package form factor. The base P/N-E3 designation indicates a RoHS-compliant, commercial-grade product, distinguishing it from the HE3_A variants which are automotive qualified under AEC-Q101 standards.

Replacement Considerations

Direct substitutes within the same series include other voltage ratings such as DZ23C3V6-E3-08 or DZ23C4V3-E3-08. For equivalent performance with automotive qualification, consider the DZ23C3V9-HE3_A-08 variant. Ensure any replacement maintains the SOT-23 package and matches the required Zener voltage tolerance and power dissipation characteristics.