FMMT549

Single Bipolar Transistors Overview

The FMMT549 is a PNP silicon planar medium power transistor manufactured by onsemi. It features a collector-emitter breakdown voltage exceeding -30V and supports a maximum continuous collector current of -1A. The device is designed for high reliability applications, meeting AEC-Q101 standards. It offers 500mW power dissipation capability and is housed in a compact SOT-23 package. The component is lead-free, RoHS compliant, and halogen and antimony free.

Single Bipolar Transistors Feature Summary

• PNP silicon planar construction for medium power switching
• High reliability qualification to AEC-Q101 automotive standards
• Compact SOT-23 surface-mount packaging
• Compliant with environmental directives including RoHS and halogen-free requirements

Single Bipolar Transistors Applications

• Automotive electronic circuits requiring high reliability
• General-purpose medium power switching applications
• Low saturation transistor circuits

Single Bipolar Transistors Procurement Notes

Verify the manufacturer origin, as Diodes Incorporated also produces this part number. Confirm the specific datasheet revision matches the required electrical characteristics. Ensure the ordering suffix corresponds to the desired tape-and-reel or cut-tape packaging format. Check for AEC-Q101 certification documentation if automotive grade compliance is mandatory for the design.

Single Bipolar Transistors Selection Notes

Select the FMMT549 when a PNP transistor with over -30V breakdown and -1A current capacity is needed in an SOT-23 footprint. Consider the complementary NPN type for push-pull configurations. Verify thermal management requirements for the 500mW dissipation limit in the target application environment.

Single Bipolar Transistors Part Context

The FMMT549 belongs to the family of small-signal PNP transistors used in general electronics and automotive systems. It serves as a medium power alternative to smaller signal devices while maintaining a low-profile surface-mount form factor. The component is often paired with its NPN counterpart for complementary circuit designs.