The description :

• The transistor is an electronic component with three active electrodes which is used in most electronic circuits, it allows to control a current or a voltage on the output electrode This is an N-channel mosfet transistor.
• A field effect transistor (mosfet) is a single pole device built without a pn junction in the main current carrying path

It has 3 terminals, which are:

• Transmitter.
• Collector.
• Based.

Specifications:

• Type: N-channel
• mosfet Model #: 15N60
• Enclosure: TO-220
• Rated current: 15A.
• Nominal voltage: 600 V.
• Max power: 250W
• Junction operating temperature range: -55 to 150C 0 Technical sheet :http://www.unisonic.com.tw/datasheet/15N60.pdf