View bd681 datasheet:

BD675A/677A/679A/681 Medium Power Linear and Switching Applications � Medium Power Darlington TR � Complement to BD676A, BD678A, BD680A and BD682 respectively TO-126 1 NPN Epitaxial Silicon Transistor 1. Emitter 2.Collector 3.Base Absolute Maximum Ratings TC=25�C unless otherwise noted Symbol Parameter Value Units VCBO Collector-Base Voltage : BD675A 45 V : BD677A 60 V : BD679A 80 V : BD681 100 V VCEO Collector-Emitter Voltage : BD675A 45 V : BD677A 60 V : BD679A 80 V : BD681 100 V VEBO Emitter-Base Voltage 5 V IC Collector Current (DC) 4 A ICP *Collector Current (Pulse) 6 A IB Base Current 100 mA PC Collector Dissipation (TC=25�C) 40 W TJ Junction Temperature 150 �C TSTG Storage Temperature - 65 ~ 150 �C Electrical Characteristics TC=25�C unless otherw