RB557WMFHTL

Overview

The RB557WMFHTL is a Schottky barrier diode manufactured by ROHM Semiconductor, designed for surface mount applications. It features a Dual Anode Common Cathode configuration within an SOT-416FL-3 package. The device utilizes Silicon technology and supports AEC-Q101 automotive qualification standards. Key electrical parameters include a maximum repetitive reverse voltage of 40V, a forward current rating of 30mA, and a maximum forward voltage of 370mV at the specified current. The component operates with a low reverse leakage current of 1uA and withstands a forward surge current of 200mA. It is rated for a maximum operating temperature of +125°C.

Feature Summary

• Dual anode common cathode configuration enables efficient rectification in compact circuits.
• Automotive grade reliability certified under AEC-Q101 standards for harsh environments.
• Low forward voltage drop minimizes power loss during conduction.
• Small SOT-416FL-3 package facilitates high-density surface mount assembly.

Applications

• Automotive electronic systems requiring AEC-Q101 compliant components
• DC-DC converter output rectification stages
• Free-wheeling diodes in inductive load protection circuits

Procurement Notes

Verify the specific suffix HTL to confirm reel packaging specifications. Ensure the part number matches the exact RoHS compliance status required for your manufacturing process. Cross-reference the datasheet revision date to confirm parameter consistency. Confirm that the SOT-416FL-3 footprint aligns with your PCB design guidelines before finalizing procurement orders.

Selection Notes

Select this component when a dual-anode common-cathode topology is required in a minimal footprint. The 40V rating suits low-voltage DC bus applications. The 30mA current capacity limits usage to signal-level or low-power rectification tasks rather than high-current power delivery. Verify thermal management requirements against the 125°C junction temperature limit.

Part Context

This component belongs to ROHM's RB55x series of small-signal Schottky barrier diodes. The series is characterized by ultra-low forward voltage and fast switching speeds. These devices are engineered for portable electronics and automotive modules where space constraints and energy efficiency are critical design drivers.

Replacement Considerations

Check for pin-compatible alternatives within the same ROHM RB55x family. Verify that substitute parts match the 40V reverse voltage and 30mA forward current ratings exactly. Ensure any replacement also holds AEC-Q101 certification if used in automotive contexts.

FAQ

What is the maximum operating junction temperature?

The maximum operating temperature is +125°C.

Is this component suitable for automotive applications?

Yes, it is qualified according to the AEC-Q101 standard.

What is the internal configuration of the diode?

It features a Dual Anode Common Cathode configuration.