RB420DFHT146

Single Diodes Overview

The RB420DFHT146 is a Schottky barrier diode manufactured by ROHM Semiconductor, designed for surface-mount applications in the SOT-346 (SC-59) package. It features a single configuration with a maximum repetitive reverse voltage of 40 V and an average forward current rating of 100 mA. The device exhibits a low forward voltage drop of approximately 550 mV at rated current and a maximum reverse leakage current of 5 µA. It supports a forward surge current of 3 A and operates within a junction temperature range up to +150°C. The component is qualified under AEC-Q101 standards for automotive reliability.

Single Diodes Feature Summary

• Schottky barrier technology ensures low forward voltage drop and fast switching speeds.
• Automotive-grade qualification compliant with AEC-Q101 standards for enhanced reliability.
• Compact SOT-346 surface-mount package facilitates high-density PCB layouts.

Single Diodes Applications

• DC-DC converter output rectification
• Free-wheeling diodes in inductive load circuits
• Reverse polarity protection in automotive electronics

Single Diodes Procurement Notes

Verify the specific suffix HT146 against the official ROHM datasheet to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the procurement channel provides traceability documentation required for AEC-Q101 qualified components. Confirm that the received parts match the RoHS compliance status indicated in the manufacturer's latest product release notes before integration into production lines.

Single Diodes Selection Notes

Select this component when a compact Schottky diode with 40 V blocking capability and 100 mA continuous current rating is required. The SOT-346 package is suitable for space-constrained designs. Consider the thermal resistance characteristics of the small outline transistor package for heat dissipation requirements in high-frequency switching applications where low forward voltage loss is critical for efficiency.

Single Diodes Part Context

This part belongs to the RB4xx series of Schottky barrier diodes from ROHM, which are optimized for low power consumption and high-speed switching. The series is widely used in consumer electronics and automotive systems requiring reliable rectification in small form factors. The RB420 variant specifically targets applications needing moderate current handling with minimal voltage drop across the junction.

Single Diodes Replacement Considerations

Direct substitutes include other 40 V, 100 mA Schottky diodes in SC-59/SOT-346 packages such as the BAT54S or similar ROHM variants like RB400DFHT146 if higher current capacity is acceptable. Verify pinout compatibility and thermal performance before substitution. Check for equivalent AEC-Q101 qualification if automotive use is intended.