BAT54S

Overview

The BAT54S is a small signal Schottky diode manufactured by Diotec Semiconductor in an SOT-23 (TO-236) surface-mount package. It features a series connection configuration with two internal diodes. The device supports a maximum average forward current of 200 mA and a repetitive peak reverse voltage of 30 V. Key electrical parameters include a non-repetitive peak forward surge current of 600 mA, a maximum junction capacitance of 10 pF at 0 V, and a reverse recovery time of less than 5 ns. Power dissipation is rated at 290 mW, with an operating junction temperature range from -55°C to +150°C.

Feature Summary

• Extremely high switching speed suitable for high-frequency applications
• Low junction capacitance and low leakage current characteristics
• Compliant with RoHS directives without exemptions

Applications

• Signal processing circuits
• High-speed switching operations
• Polarity protection mechanisms

Procurement Notes

Verify the specific ordering suffix when procuring the BAT54S. The absence of a suffix indicates industrial grade availability. Suffixes such as -C denote commercial grade, while -Q indicates AEC-Q101 compliance and -AQ signifies AEC-Q101 qualification. Confirm these designations against project requirements before finalizing orders to ensure correct reliability grading.

Selection Notes

Select the BAT54S for designs requiring fast switching speeds and low parasitic capacitance in compact surface-mount layouts. The series configuration distinguishes it from common cathode or common anode variants within the same family. Ensure the selected variant matches the required thermal and reliability standards, particularly if automotive qualification via the -AQ suffix is necessary for the target application environment.

Part Context

This component belongs to the BAT54 family of SMD small signal Schottky diodes produced by Diotec Semiconductor. The BAT54S specifically utilizes a series connection topology, differentiating it from other configurations like the BAT54A (common anode) or BAT54 (single diode). All variants share similar core electrical ratings but differ in internal pinout arrangements and specific marking codes.

Replacement Considerations

BAT54S-AQ serves as the automotive qualified replacement variant offering identical electrical performance with enhanced reliability certification.