RB508FM-40AFHT106

Overview

RB508FM-40AFHT106 is a Schottky barrier diode with a common anode configuration, designed for automotive applications under AEC-Q101 standards. It features a 40V reverse voltage and 80mA average rectified forward current in a SOT-323 (UMD3) package. Key electrical parameters include a maximum forward voltage of 0.66V at 40mA, a maximum reverse current of 35nA at 30V, and a junction temperature rating of 150°C. The device utilizes ultra-low reverse current technology to minimize leakage.

Feature Summary

• Ultra-low reverse current characteristics suitable for small current rectification
• Automotive-grade reliability compliant with AEC-Q101 standards
• Common anode configuration within a compact surface-mount package

Applications

• Automotive electronic circuits requiring low leakage
• Small current rectification applications
• General-purpose diode functions in space-constrained designs

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details and tape-and-reel quantities. Ensure the component meets the required AEC-Q101 qualification level for your target application. Cross-reference the datasheet revision date to confirm parameter validity before integration into final designs.

Selection Notes

Select this component when low leakage current is critical for circuit efficiency. The common anode setup allows for dual-diode functionality in a single package. Verify that the 40V reverse voltage rating exceeds the peak inverse voltage in the target circuit. Ensure the thermal management supports the 150°C junction temperature limit.

Part Context

This part belongs to ROHM's automotive-grade Schottky barrier diode series. It is specifically engineered for high reliability in vehicle electronics. The SOT-323 package provides a small footprint suitable for dense PCB layouts. The product line emphasizes low power consumption through reduced reverse current specifications.

Replacement Considerations

Consult official substitution guides for equivalent parts with matching pinouts and electrical ratings. Verify that any replacement also holds AEC-Q101 certification if used in automotive contexts. Ensure the alternative component maintains similar forward voltage and reverse current characteristics.