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BUY49S
SILICON NPN TRANSISTOR
s SGS-THOMSON PREFERRED SALESTYPE
s NPN TRANSISTOR
s FAST SWITCHING SPEED
s LOW COLLECTOR EMITTER SATURATION
APPLICATIONS
s GENERAL PURPOSE SWITCHING
DESCRIPTION
The BUY49S is a silicon epitaxial planar NPN
transistor in jedec TO-39 package. It is used in
high-current switching applications up to 3 A.
TO-39
INTERNAL SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V CBO Collector-Base Voltage (IE = 0) 250 V
V CEO Collector-Emitter Voltage (I B = 0) 200 V
V EBO Emitter-Base Voltage (IC = 0) 6 V
IC Collector Current 3 A
I CM Collector Peak Current 5 A
P tot Total Power Dissipation at T amb 25 o C 10 W
o
T stg Storage Temperature - 65 to 200 C
o
Tj Max Operating Junction Temperature 200 C
June 1997 1/4
BUY49S
THERMAL DATA
o
R thj-case Thermal Resistance Junction-case Max 15 C/W
o
R thj-amb Thermal Resistance Junction-case-ambient Max 175 C/W
o
ELECTRICAL CHARACTERISTICS (Tcase = 25 C unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I CBO Collector Cut-off V CB = 200 V 0.1