BAT54CWFILMY

Overview

The BAT54CWFILMY is a Schottky barrier diode manufactured by STMicroelectronics, designed for automotive applications with AEC-Q101 qualification. It features a dual anode common cathode configuration in a compact SOT-323 surface-mount package. Key electrical parameters include a maximum repetitive reverse voltage of 40 V and an average forward current rating of 300 mA per diode. The device exhibits a low forward voltage drop of 240 mV at rated current and a maximum reverse leakage current of 100 uA. It supports a forward surge current of 1 A and operates within a junction temperature range of -40°C to +150°C.

Feature Summary

• Automotive-grade reliability certified under AEC-Q101 standards
• Low forward voltage drop for enhanced energy efficiency
• Fast switching characteristics with minimal reverse recovery time
• Compact SOT-323 package suitable for space-constrained designs

Applications

• General purpose switching in automotive electronic systems
• Protection circuits against reverse polarity or voltage spikes
• Clamping applications in signal processing paths
• DC-DC converter freewheeling diodes

Procurement Notes

Verify the specific suffix 'FILMY' corresponds to the intended packaging format and tape-and-reel specifications required for your assembly line. Confirm that the AEC-Q101 qualification meets the specific reliability class demanded by your automotive application. Ensure compatibility with the SOT-323 footprint on your PCB layout. Cross-reference the manufacturer's latest datasheet for any updates regarding pinout or thermal characteristics before finalizing procurement.

Selection Notes

Select this component when automotive certification is mandatory and low conduction losses are critical. The dual anode common cathode topology allows for efficient rectification or logic functions in a single package. Consider the 40 V reverse voltage rating to ensure adequate margin over operating voltages. The SOT-323 package offers a balance between thermal performance and board space savings compared to larger packages.

Part Context

This part belongs to the BAT54 series of Schottky diodes from STMicroelectronics, which are widely used in consumer and automotive electronics. The series is known for its fast switching speeds and low forward voltage. The 'CW' variant specifically denotes the dual anode common cathode configuration, while the 'FILMY' suffix indicates the specific reel packaging and marking code used by the manufacturer for traceability.

Replacement Considerations

Direct substitutes may include other BAT54CW variants from different manufacturers, provided they meet the same AEC-Q101 qualification and electrical specifications. Verify pin compatibility and thermal resistance values when considering alternatives from other suppliers.