This part is a kind of semiconductor called D44H11.

Function of this product has Complementary power transistors.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

D44H8 - D44H11 D45H8 - D45H11 Complementary power transistors Features ■ Low collector-emitter saturation voltage ■ Fast switching speed Applications ■ Power amplifier ■ Switching circuits Description The devices are manufactured in low voltage multi epitaxial planar technology. They are intended for general purpose linear and switching applications. . TAB 3 2 1 TO-220 Figure 1. Internal schematic diagram Table 1. Device summary Order codes Marking D44H8 D44H8 D44H11 D44H11 D45H8 D45H8 D45H11 D45H11 Polarity NPN NPN PNP PNP Package TO-220 TO-220 TO-220 TO-220 October 2009 Doc ID 4213 Rev 5 Packaging Tube Tube Tube Tube 1/8 www.st.com 8 Absolute maximum ratings 1 Absolute maximum ratings D44H8, D44H11, D45H8, D45H11 Note: Table 2. Absolute maximum ratings Sy [ ... ]

D44H11 PDF Datasheet Download