RB088NS-40FHTL

Overview

The RB088NS-40FHTL is a silicon Schottky barrier diode manufactured by ROHM Semiconductor, housed in a TO-263S (D2PAK) surface-mount package. It features a dual anode common cathode configuration with a maximum repetitive reverse voltage of 45 V and a continuous forward current rating of 10 A. The device exhibits a maximum forward voltage of 0.77 V at 5 A and a maximum reverse current of 3 mA at 40 V. It supports a forward surge current of 50 A and operates within a junction temperature range up to 150 °C. This component holds AEC-Q101 qualification for automotive applications.

Feature Summary

• Utilizes blocking metal technology to achieve super low reverse leakage current characteristics suitable for high-temperature environments.
• Provides enhanced thermal stability and resistance to thermal runaway compared to general-purpose Schottky diodes.
• Features a dual anode common cathode configuration for efficient rectification in power supply circuits.

Applications

• Switching power supplies
• Automotive electronic systems
• Industrial equipment requiring high reliability

Procurement Notes

Verify the specific suffix FHTL against the manufacturer's latest datasheet to confirm tape and reel packaging details. Ensure the part number matches the exact voltage and current ratings required for the target application. Confirm AEC-Q101 compliance status if automotive qualification is mandatory for the design. Check for any recent lifecycle changes or obsolescence notices from ROHM Semiconductor before finalizing procurement plans.

Selection Notes

Select this component when designing circuits that require low reverse leakage current at elevated temperatures to prevent thermal instability. The TO-263S package offers robust thermal dissipation capabilities for high-current applications. Consider the 45 V reverse voltage rating to ensure adequate margin over the operating voltage. The dual anode configuration allows for flexible circuit topologies such as full-wave rectification.

Part Context

This device belongs to the RBxx8 series of Schottky barrier diodes designed specifically for high-reliability applications. The series addresses the typical limitation of Schottky diodes regarding reverse current degradation at high temperatures. By employing specialized blocking metal structures, these diodes maintain stable performance in demanding automotive and industrial environments where traditional rectifiers might fail due to thermal runaway.

Replacement Considerations

The RB088BM-40FH is listed as a Not Recommended for New Design (NRND) product, with the RB088BM-40FHH identified as the recommended replacement. Both share the same pinout and TO-252M package but differ in maximum junction temperature specifications. Verify compatibility with existing PCB footprints and thermal management requirements when considering alternative packages within the same family.