RB557WMTL

Overview

The RB557WMTL is a Schottky barrier diode manufactured by ROHM Semiconductor, housed in an SOT-416FL-3 surface-mount package. It features a dual cathode common anode configuration with silicon technology. Key electrical parameters include a repetitive reverse voltage of 30 V and a forward current rating of 100 mA. The device exhibits a maximum forward voltage of 490 mV and a reverse current of 10 uA. It supports a forward surge current of 500 mA and operates within a temperature range up to +150 C.

Feature Summary

• Dual cathode common anode configuration for efficient circuit design
• Low forward voltage characteristic for improved power efficiency
• High thermal stability supporting operation up to +150 C

Applications

• General purpose rectification in low-voltage circuits
• Power supply input protection stages
• Freewheeling diodes in DC-DC converter topologies

Procurement Notes

Verify the specific suffix WMTL against the official datasheet to confirm packaging type and tape/reel specifications. Ensure the component matches the required SOT-416FL-3 footprint dimensions for PCB layout compatibility. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and RoHS compliance status prior to ordering.

Selection Notes

Select this component when a compact dual Schottky diode solution is required for space-constrained designs. The common anode arrangement simplifies wiring in bridge or switching applications. Consider the 30 V reverse voltage limit and 100 mA continuous current rating to ensure adequate margin for the target application's peak loads and operating conditions.

Part Context

This device belongs to the RB548/RB557 series of small-signal Schottky barrier diodes from ROHM. It shares the same physical SOT-416FL-3 package form factor as related models but differs in internal junction characteristics and specific electrical ratings such as forward voltage and reverse leakage current compared to other variants in the lineup.

Replacement Considerations

Direct pin-to-pin replacements may include the RB548WMTL, though differences in forward voltage and reverse current must be evaluated. Verify that any substitute maintains the dual cathode common anode configuration and fits the SOT-416FL-3 package constraints without altering thermal performance.