BZX84C4V3-G3-18

Single Zener Diodes Overview

The BZX84C4V3-G3-18 is a silicon planar Zener diode from the Vishay BZX84-G series, housed in an SOT-23 surface-mount package. It provides a nominal Zener voltage of 4.3 V with a standard 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 test current of 5 mA, a maximum reverse leakage current of 3 µA at 1 V, and a dynamic impedance of 90 Ω.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Complies with international E24 standard grading for Zener voltages
• Offers high electrostatic discharge protection capability

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection stages
• Clamping applications in signal processing

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the required voltage tolerance and tape reel quantity. Confirm compliance with RoHS directives and material categorization standards before finalizing procurement. Ensure storage conditions adhere to moisture sensitivity level requirements to maintain component integrity during assembly.

Single Zener Diodes Selection Notes

Select this component when a 4.3 V reference with ±5% accuracy is required in a compact SOT-23 footprint. Consider the thermal resistance and power derating curves if operating near maximum ambient temperatures. Verify that the dynamic impedance meets the noise and stability requirements of the specific circuit design.

Single Zener Diodes Part Context

This part belongs to the BZX84-G series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 2.2 V to 75 V, utilizing standardized E24 grading. The 'G3' suffix indicates a green, commercial-grade product compliant with environmental directives.

Single Zener Diodes Replacement Considerations

Substitutes must match the 4.3 V nominal voltage, ±5% tolerance, and SOT-23-3 package. Verify equivalent thermal resistance and maximum power dissipation ratings to ensure reliable operation under identical load conditions.