This part is a kind of semiconductor called 2SD218.

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 2SD218 DESCRIPTION ·Collector-Emitter Breakdown Voltage- : V(BR)CEO= 150V (Min) ·Low Collector-Emitter Saturation Voltage- : VCE(sat)= 1.5V (Max.)@ IC= 7A APPLICATIONS ·Low saturation voltage ·Excellent current gain linearity ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER MAX UNIT VCBO Collector-Base Voltage 150 V VCEO Collector-Emitter Voltage 100 V VEBO Emitter-Base Voltage 7V IC Collector Current-Continuous 7A IB Base Current-Continuous PC Collector Power Dissipation @TC=25℃ Tj Junction Temperature 2A 60 W 150 ℃ Tstg Storage Temperature Range -65~150 ℃ isc website：www.iscsemi.com 1 isc & iscsemi is registered trademark INCHANGE Semiconductor isc Silicon NPN Pow [ ... ]

2SD218 PDF Datasheet Download