onsemi High Voltage NPN Transistor, 300 mA, 400 V, 2W Power Dissipation, 4-Pin SOT-223 FJT44KTF

onsemi FJT44KTF is a high voltage NPN bipolar junction transistor engineered for electronic components and power switching circuits operating at a maximum DC collector current of 300 mA and collector-emitter voltage of 400 V. Packaged in a compact 4-Pin SOT-223 package, it is intended for surface mount applications where space and thermal management are critical.

Its robust construction allows power dissipation of up to 2 watts, facilitating efficient heat dissipation and reliability under demanding conditions. The transistor provides a minimum DC current gain (hFE) of 40, making it suitable for amplification purposes in various circuit designs.

Additional maximum voltage ratings include a collector-base voltage (VCBO) of 500 V and emitter-base voltage (VEBO) of 6 V, ensuring rugged performance. It operates reliably up to temperatures of 150°C, covering performance needs in industrial, electronics manufacturing, and laboratory environments.

The physical dimensions of 7.5 mm width, 6.7 mm length, and 1.8 mm height support compact PCB layouts without compromising electrical performance. While not certified for automotive standards, its construction aligns with common bipolar transistor requirements.

Typical applications include industrial control systems, power management circuits, and general-purpose electronic switching. This transistor offers designers a dependable option for medium-power switching and amplification tasks in professional electronic assemblies.

This transistor supports a maximum DC collector current of 300 mA. It withstands a maximum collector-emitter voltage of 400 V. Power dissipation is rated at 2 watts for reliable thermal performance. Features a minimum DC current gain (hFE) of 40 ensuring good amplification.

The transistor is configured as a single NPN type with 4 pins for surface mounting. Maximum collector-base voltage is 500 V and emitter-base voltage is 6 V. Operating temperature ranges up to 150°C for durability. Compact SOT-223 package measures 7.5 mm width, 6.7 mm length, and 1.8 mm height.

Designed without automotive certification but suitable for diverse electronic circuit designs. Explore additional onsemi electronic components and discrete semiconductors in the Bipolar Transistors category at EnvMart for industrial and laboratory applications.