VS-18TQ035STRR-M3

Single Diodes Overview

The VS-18TQ035STRR-M3 is a high-performance Schottky rectifier from Vishay Semiconductors, rated for 18 A average forward current and 35 V maximum DC reverse voltage. It utilizes proprietary barrier technology to ensure low reverse leakage at elevated temperatures, supporting reliable operation up to a 175 °C junction temperature. The component features a D2PAK (TO-263AB) surface-mount package with a base cathode configuration. Key electrical characteristics include a typical forward voltage drop of 0.53 V at 18 A and 125 °C, and a maximum non-repetitive surge current capability of 1800 A.

Single Diodes Feature Summary

• Optimized for low reverse leakage current at high operating temperatures
• Guard ring structure provides enhanced ruggedness and long-term reliability
• High frequency operation capability suitable for switching power supplies
• Halogen-free, RoHS-compliant construction with lead (Pb)-free terminations

Single Diodes Applications

• Switching power supplies
• DC/DC converters
• Freewheeling diodes in inductive circuits
• Reverse battery protection systems

Single Diodes Procurement Notes

Verify the specific ordering suffix STRR against official documentation to confirm right-oriented tape and reel packaging. Ensure compatibility with standard D2PAK footprint layouts during PCB design. Confirm that the selected variant meets all required thermal management specifications for the intended application environment before finalizing procurement orders.

Single Diodes Selection Notes

Select this component when applications require robust high-temperature performance exceeding standard silicon limits. The D2PAK package offers efficient heat dissipation through the exposed thermal pad. Verify that the 35 V rating aligns with peak circuit voltages and that the 18 A current capacity accommodates both continuous and transient load requirements without exceeding thermal resistance limits.

Single Diodes Part Context

This device belongs to the VS-18TQ...S-M3 series, which includes variants with 40 V and 45 V reverse voltage ratings. All members share identical physical dimensions, pin configurations, and thermal characteristics within the D2PAK package. The series is designed to provide consistent performance across different voltage classes while maintaining the same mechanical form factor for flexible design integration.

Single Diodes Replacement Considerations

Direct substitutes within the same series include VS-18TQ040S-M3 and VS-18TQ045S-M3, provided higher voltage ratings are acceptable. Cross-manufacturer replacements must match the 18 A current rating, 35 V minimum reverse voltage, D2PAK package outline, and base cathode configuration to ensure functional equivalence.

Single Diodes FAQ

What is the maximum junction temperature for the VS-18TQ035STRR-M3?

The maximum junction temperature is 175 °C.

How does the forward voltage drop change with temperature?

The forward voltage drop decreases as temperature increases; it is typically 0.60 V at 25 °C and 0.53 V at 125 °C under rated current conditions.

Is the device qualified for moisture sensitivity level 1?

Yes, the device meets MSL level 1 per J-STD-020 standards.