This part is a kind of semiconductor called BDT87.

Function of this product has (BDT81 - BDT87) Silicon NPN Power Transistors.

Manufacturers : Inchange Semiconductor

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Some of the text within the PDF file :

INCHANGE Semiconductor isc Product Specification isc Silicon NPN Power Transistors DESCRIPTION ·DC Current Gain -hFE = 40(Min)@ IC= 5A ·Collector-Emitter Sustaining Voltage: VCEO(SUS) = 60V(Min)- BDT81; 80V(Min)- BDT83; 100V(Min)- BDT85; 120V(Min)- BDT87 ·Complement to Type BDT82/84/86/88 APPLICATIONS ·Designed for use in audio output stages and general amplifer and switching applications ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER BDT81 BDT83 VCBO Collector-Base Voltage BDT85 BDT87 BDT81 BDT83 VCEO Collector-Emitter Voltage BDT85 BDT87 VEBO IC ICM IB B BDT81/83/85/87 VALUE 60 80 UNIT V 100 120 60 80 V 100 120 7 15 20 4 125 150 -65~150 V A A A W ℃ ℃ Emitter-Base Voltage Collector Current-Continuous Collector Current-Peak Base Current Collector Pow [ ... ]

BDT87 PDF Datasheet Download