RB480Y-40T2R

Overview

The RB480Y-40T2R is a dual Schottky barrier diode manufactured by ROHM Semiconductor, utilizing silicon technology. It features an SOT-543-4 surface-mount package with a maximum repetitive reverse voltage of 40 V and a forward current of 200 mA per element. The device exhibits a typical forward voltage of 550 mV and a reverse leakage current of 10 µA at 40 V. Designed for high reliability, it supports a maximum operating junction temperature of +125 °C and includes lead-free plating to prevent whisker formation.

Feature Summary

• Dual configuration integrating two independent Schottky barriers within a compact four-terminal surface-mount footprint.
• Utilizes silicon-based construction optimized for low forward voltage characteristics and minimal reverse leakage current.
• Incorporates lead-free plating processes specifically engineered to suppress whisker formation on terminal surfaces.

Applications

• DC-DC converter output rectification in portable electronic devices
• Power supply freewheeling circuits for small signal applications
• Reverse polarity protection in battery-powered consumer electronics

Procurement Notes

Verify the specific RoHS compliance status through official manufacturer documentation prior to integration, as environmental declarations may vary by production batch. Confirm that the SOT-543-4 package dimensions align precisely with the target PCB land pattern design. Ensure thermal management strategies account for the specified maximum junction temperature limit during continuous operation to maintain long-term reliability and performance stability.

Selection Notes

Select this component when a dual-diode solution is required in a minimal footprint for low-voltage rectification tasks. The 40 V rating suits low-voltage systems, while the 200 mA current capacity addresses moderate load requirements. Consider the SOT-543-4 package for space-constrained designs where dual isolation or common cathode/anode configurations are necessary without occupying separate board areas.

Part Context

This part belongs to the RB480Y series of dual Schottky barrier rectifiers from ROHM Semiconductor. It is designed for general-purpose switching applications requiring fast recovery characteristics and low power loss. The series emphasizes miniaturization and reliability for modern consumer electronics and industrial control systems utilizing surface-mount assembly techniques.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative dual Schottky diodes based on matching voltage ratings, current capacities, and package dimensions before implementation.