VS-18TQ040STRLHM3

Single Diodes Overview

The Vishay VS-18TQ040STRLHM3 is a high-performance Schottky rectifier rated for 18 A average forward current and 40 V maximum repetitive reverse voltage. It utilizes proprietary barrier technology to achieve low forward voltage drop (0.53 V at 18 A, 125 °C) and low reverse leakage current (25 mA at 125 °C). The device operates reliably up to a junction temperature of 175 °C and supports non-repetitive surge currents of 1800 A. Packaged in a D2PAK (TO-263AB) surface-mount housing with a left-oriented tape and reel configuration, it features an approximate thermal resistance from junction to case of 1.50 °C/W.

Single Diodes Feature Summary

• Proprietary barrier technology enables reliable operation at elevated temperatures up to 175 °C junction temperature.
• Optimized for low reverse leakage current at high temperatures to enhance efficiency in power conversion applications.
• Guard ring structure provides enhanced ruggedness and long-term reliability under demanding electrical conditions.

Single Diodes Applications

• Switching power supplies
• DC-DC converters
• Freewheeling diodes
• Reverse battery protection circuits

Single Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging orientation and compliance attributes. The STRL designation indicates a left-oriented tape and reel format. Ensure that the component meets all applicable environmental standards, such as RoHS and halogen-free requirements, prior to integration into final assemblies.

Single Diodes Selection Notes

Select this component when designing circuits requiring high current density and robust thermal performance in a compact surface-mount footprint. The D2PAK package facilitates efficient heat dissipation through the exposed thermal pad. Consider the 175 °C operating limit and low forward voltage characteristics for optimizing system efficiency in high-temperature environments.

Single Diodes Part Context

This part belongs to the VS-18TQ...SHM3 series of high-performance Schottky rectifiers manufactured by Vishay Semiconductors. The series includes variants with different voltage ratings, specifically 35 V, 40 V, and 45 V, sharing identical current ratings and physical packaging. The 'M3' suffix denotes halogen-free, RoHS-compliant construction with lead-free terminations.

Single Diodes Replacement Considerations

Direct substitutes within the same series include VS-18TQ035STRLHM3 and VS-18TQ045STRLHM3, which share the same package and current rating but differ in voltage specifications. Cross-family replacements require verification of thermal resistance, forward voltage, and reverse leakage parameters against original design constraints.

Single Diodes FAQ

What is the maximum non-repetitive surge current capability?

The device can withstand a non-repetitive surge current of 1800 A for a 5 μs sine wave pulse or 390 A for a 10 ms sine wave pulse.

Is this component qualified for automotive applications?

Yes, the VS-18TQ040STRLHM3 is AEC-Q101 qualified, indicating suitability for automotive electronic systems.