FMMT491ATC

Single Bipolar Transistors Overview

The FMMT491ATC is a 40V NPN silicon planar medium power transistor manufactured by Diodes Incorporated. It features a continuous collector current of 1A and a peak pulse current of 2A. The device offers a low equivalent on-resistance of 195mΩ and a maximum power dissipation of 500mW. Electrical characteristics include a DC current gain (hFE) characterized up to 2A, with values ranging from 300 at 1mA to 35 at 2A. The transition frequency is 150MHz. It operates within a temperature range of -55°C to +150°C and is housed in an SOT-23 package.

Single Bipolar Transistors Feature Summary

• Qualified to AEC-Q101 standards for high reliability
• Low equivalent on-resistance of 195mΩ
• DC current gain characterized up to 2A for high current applications
• Totally lead-free and fully RoHS compliant

Single Bipolar Transistors Applications

• Automotive electronics requiring AEC-Q101 qualified components
• General purpose switching and amplification circuits
• High current load driving applications

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix 'TC' against official documentation to confirm reel size and quantity specifications. Ensure compliance requirements such as AEC-Q101 qualification and RoHS status match project needs. Confirm that the SOT-23 package dimensions and marking codes align with PCB layout constraints before finalizing procurement decisions.

Single Bipolar Transistors Selection Notes

Select this component when a 40V NPN transistor with 1A continuous current capability is required. Consider the low saturation resistance for efficiency in switching applications. Verify thermal management requirements given the 500mW power dissipation limit in the SOT-23 package. Ensure the operating temperature range meets environmental conditions.

Single Bipolar Transistors Part Context

This part belongs to the FMMT491A series of NPN silicon planar medium power transistors. It shares electrical characteristics with other variants like FMMT491ATA but differs in packaging configuration. The series is designed for general-purpose applications requiring reliable performance in compact surface-mount designs.

Single Bipolar Transistors Replacement Considerations

Consult official cross-reference tools for parametrically similar parts. Verify pinout compatibility and voltage/current ratings before substitution. Ensure replacement components meet the same AEC-Q101 qualification if automotive use is intended.