This part is a kind of semiconductor called TIP41C.
Function of this product has NPN Silicon Epitaxial Power Transistor.
Manufacturers : Thinki Semiconductor
Image and pinout :
Some of the text within the PDF file :
TIP41/41A/41B/41C ® Pb Free Plating Product TIP41/TIP41A/TIP41B/TIP41C Pb NPN Silicon Epitaxial Power Transistor FEATURES: * Medium Power Linear Switching Applications * Complement to TIP42/TIP42A/TIP42B/TIP42C 9.90±0.20 φ3.60±0.20 4.50±0.20 1.30±0.20 6.50±0.20 15.70±0.20 2.80±0.20 9.19±0.20 COLLECTOR 2 BASE 1 3 EMITTER 1. BASE 2. COLLECTOR 3. EMITTER 3.02±0.20 13.08±0.20 1.27±0.20 1.52±0.20 2.40±0.20 1 23 TO-220C 2.54typ 2.54typ Package Dimension 0.80±0.20 0.50±0.20 Dimensions in Millimeters MAXIMUM RATINGS (TA=25℃ unless otherwise noted) Symbol Parameter TIP41 VCBO Collector-Base Voltage 40 VCEO Collector-Emitter Voltage 40 VEBO Emitter-Base Voltage IC Collector Current -Continuous PC Collector Power Dissipation TJ Junction Temper [ ... ]