This part is a kind of semiconductor called MJL21194G.

Function of this product has Silicon NPN Power Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc Silicon NPN Power Transistor isc Product Specification MJL21194G DESCRIPTION ·High Collector-Emitter Breakdown Voltage- : V(BR)CEO= 250V(Min) High DC Current Gain – hFE = 25 Min @ IC = 8 Adc ·Complement to Type MJL21193 APPLICATIONS Perforated Emitter technology high power audio output, disk head positioners linear applications ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VCBO Collector-Base Voltage 400 V VCEO Collector-Emitter Voltage 250 V VEBO Emitter-Base Voltage 5V IC Collector Current-Continuous 16 A IB Base Current-Continuous PC Collector Power Dissipation @ TC=25℃ TJ Junction Temperature 5A 200 W 150 ℃ Tstg Storage Temperature Range -55~150 ℃ isc website：www.iscsemi.com 1 isc & iscsemi is registered [ ... ]

MJL21194G PDF Datasheet Download