This part is a kind of semiconductor called MJE13005A.
Function of this product has Switchmode Series NPN Silicon Power Transistors.
Manufacturers : nELL
Image and pinout :

Some of the text within the PDF file :
SEMICONDUCTOR MJE13005A(NPN) RoHS RoHS Nell High Power Products Switchmode Series NPN Silicon Power Transistors (4A / 400V / 75W) FEATURES VCEO(SUS) ≥ 400V @ lC = 10 mA, lB = 0 VCE(sat) = 1.0V (Max.) @ lC = 4 A, lB = 1 A Switching time - tf = 0.9 µs (Max.) @ lC = 2 A 700V blocking capability 1 2 3 TO-220AB (MJE13005A) DESCRIPTION T hese devices are designed for high-voltage, high-speed power switching inductive circuits where fall time is critical. They are particularly suited for 115 and 220V SWITCHMODE applications such as switching regulators, inverters, motor controls, solenoid/relay drivers and deflection circuits. INTERNAL SCHEMATIC DIAGRAM C (TAB) (1) B (2) E ( NPN) ABSOLUTE MAXIMUM RATINGS (TC = 25°C unless otherwise specified) SYMBOL VCEV V CEO V EBO IC I CM IB I BM P [ ... ]
MJE13005A PDF Datasheet Download
