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BST39,BST40

TRANSISTOR (NPN)
SOT-89-3L

FEATURES
Low Current 1. BASE
High Voltage
2. COLLECTOR
APPLICATIONS
General Purpose Switching and Amplification 3. EMITTER

MARKING:BCT39:AT1
BCT40:AT2

MAXIMUM RATINGS (Ta=25 unless otherwise noted)

Symbol Parameter Value Unit
BST39 400
VCBO Collector-Base Voltage V
BST40 300
Collector-Emitter Voltage BST39 350
VCEO V
BST40 250
VEBO Emitter-Base Voltage 5 V
IC Collector Current 100 mA
PC Collector Power Dissipation 500 mW
RJA Thermal Resistance From Junction To Ambient 250 /W
Tj Junction Temperature 150
Tstg Storage Temperature -55~+150

ELECTRICAL CHARACTERISTICS (Ta=25 unless otherwise specified)

Parameter Symbol Test conditions Min Typ Max Unit
BST39 400
Collector-base breakdown voltage V(BR)CBO IC=100