BAT54C-AQ

Overview

The BAT54C-AQ is a Schottky barrier diode array manufactured by Diotec Semiconductor, housed in an SOT-23 surface-mount package. It features two common cathode elements with a maximum repetitive peak reverse voltage of 30 V and an average forward rectifying current of 200 mA per diode. The device exhibits a low forward voltage drop of approximately 1 V at 100 mA and a fast switching speed characterized by a reverse recovery time of 5 ns. Designed for automotive reliability, it operates within a junction temperature range of -55°C to 150°C and complies with AEC-Q101 standards.

Feature Summary

• Automotive-grade qualification ensuring high reliability under stringent environmental conditions
• Ultra-fast switching capability minimizing energy loss during rapid transitions
• Low forward voltage drop enhancing overall circuit efficiency
• Compact SOT-23 footprint suitable for space-constrained printed circuit board layouts

Applications

• Polarity protection circuits in automotive electronic control units
• Clamping and steering diodes in high-speed data communication interfaces
• Output rectification in compact DC-DC converter modules
• Protection against electrostatic discharge (ESD) and transient voltage spikes

Procurement Notes

Verify the specific ordering code suffix to confirm the presence of the automotive grade designation and ensure compliance with AEC-Q101 requirements. Confirm that the requested quantity matches the standard tape and reel packaging specifications provided by the manufacturer. Cross-reference the component marking codes on the physical devices to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring robust reverse polarity protection or fast signal steering in automotive environments. The common cathode configuration simplifies schematic design for dual-diode applications. Ensure the thermal management strategy accommodates the power dissipation limits specified in the datasheet to maintain performance within the extended operating temperature range.

Part Context

This part belongs to the BAT54 series of small-signal Schottky diodes, widely utilized in consumer electronics and industrial applications. The 'AQ' suffix specifically denotes the automotive qualified variant, distinguishing it from standard commercial versions. It serves as a critical passive component in modern vehicle electronics, supporting functions ranging from battery management to infotainment system protection.

Replacement Considerations

Direct substitutes include other automotive-qualified Schottky arrays in SOT-23 packages, such as the BAT54S-AQ or BAT54A-AQ from Diotec, provided pin configurations and electrical parameters align with the original design requirements.