NRTST40H100CTG

Overview

The NRTST40H100CTG is a dual Schottky rectifier manufactured by onsemi, featuring a common cathode configuration within a D2PAK-3 (TO-263-3) surface-mount package. It is designed for high-efficiency power conversion applications requiring low forward voltage drop and fast switching speeds. The device supports a maximum continuous forward current of 40 A per diode and withstands a repetitive peak reverse voltage of 100 V. Key electrical parameters include a typical forward voltage of 900 mV at rated current, a maximum reverse leakage current of 10 µA, and a non-repetitive peak surge current capability of 350 A. The component is qualified to AEC-Q101 standards and operates at junction temperatures up to +175 °C.

Feature Summary

• Dual anode common cathode configuration for efficient bridge-less PFC and synchronous rectification topologies
• Ultra-low forward voltage characteristic minimizes conduction losses and thermal management requirements
• High-temperature operation capability up to +175 °C junction temperature ensures reliability in demanding environments
• AEC-Q101 qualification confirms suitability for automotive electronics applications

Applications

• Automotive battery management systems and DC-DC converters
• Bridge-less Power Factor Correction (PFC) circuits
• Synchronous rectification in isolated and non-isolated power supplies
• Free-wheeling diodes in high-frequency switching regulators

Procurement Notes

Verify the specific suffix and marking code against the official onsemi datasheet to confirm the exact variant, as packaging or tape-and-reel specifications may vary. Confirm RoHS compliance status and REACH SVHC declarations with the supplier prior to procurement. Ensure the ordering quantity matches the manufacturer's standard reel size to avoid partial reel handling issues. Validate that the component meets the required AEC-Q101 automotive grade specifications if intended for automotive use.

Selection Notes

Select this component when designing circuits requiring high current handling with minimal voltage drop in a compact surface-mount footprint. The 40 A rating and 100 V breakdown voltage make it suitable for 12 V and 24 V automotive systems. Consider the thermal resistance of the D2PAK package and ensure adequate PCB copper area for heat dissipation. Verify that the forward voltage characteristics align with the efficiency targets of the specific power topology being implemented.

Part Context

This part belongs to onsemi’s NRTST series of high-current Schottky rectifiers, which are engineered for robust performance in automotive and industrial power applications. The series emphasizes low forward voltage and high thermal stability. The NRTST40H100CTG specifically addresses the need for high-efficiency rectification in space-constrained designs where traditional through-hole packages are impractical. It complements other components in onsemi’s automotive-grade discrete portfolio.

Replacement Considerations

Consult onsemi’s official cross-reference documentation for verified equivalent parts. Potential substitutes may include other 40 A, 100 V dual Schottky diodes in D2PAK-3 packages from the same manufacturer, provided pinout and electrical parameters match exactly. Verify that any replacement maintains AEC-Q101 qualification if automotive application is required.