VLZ4V3A-GS18

Single Zener Diodes Overview

The VLZ4V3A-GS18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 32.97 V with a tolerance of ±5%. The device is designed for surface mount installation in the SOD-80 (QuadroMELF) package, which utilizes a glass encapsulation. It has a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. The component is classified as an automotive-grade part compliant with AEC-Q101 standards.

Single Zener Diodes Feature Summary

• Automotive-grade reliability certified under AEC-Q101 standards
• High thermal stability supporting operation up to 175°C
• Glass encapsulation providing isolated case connection

Single Zener Diodes Applications

• Voltage regulation in automotive electronic circuits
• Over-voltage protection for sensitive components
• Reference voltage generation in high-temperature environments

Single Zener Diodes Procurement Notes

Verify the specific voltage tolerance suffix 'A' corresponds to the required 32.97 V nominal value during procurement. Confirm that the SOD-80 package dimensions align with the target PCB footprint. Ensure the supplier provides documentation confirming AEC-Q101 compliance for automotive applications. Check for any obsolescence notices or lifecycle status updates from the manufacturer before finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a precise 32.97 V reference is needed in space-constrained automotive designs. The SOD-80 package offers a compact form factor suitable for dense layouts. Consider the 500 mW power rating against expected operating currents to ensure adequate thermal headroom. The wide operating temperature range makes it suitable for under-hood or harsh environment applications where standard commercial parts may fail.

Single Zener Diodes Part Context

This part belongs to the VLZ series of low-power Zener diodes from Vishay. The series is characterized by its QuadroMELF (SOD-80) packaging, which provides robust mechanical performance. The 'GS18' suffix typically indicates RoHS compliance and specific tape-and-reel packaging configurations. This series is distinct from higher-power MELF packages and smaller SOD-323 variants.

Single Zener Diodes Replacement Considerations

Direct substitutes include other Vishay parts in the VLZ series with matching voltage and package, such as VLZ33C-GS18 for a 34.27 V alternative. Cross-manufacturer replacements must match the SOD-80 footprint, 500 mW rating, and AEC-Q101 qualification. Verify that any substitute maintains the same reverse leakage current and dynamic impedance characteristics for critical circuit performance.