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MAXIMUM RATINGS
Rating
Emitter-Collector Voltage
Collector-Base Voltage
Emitter-Base Voltage
—Collector Current Continuous
Total Device Dissipation
(o Ta = 25°C Derate above 25°C
Total Device Dissipation
@ TC = 25°C
Derate above 25°C
Operating and Storage Junction Temperature Range
Symbol 2N2944 2N2945 2N2946
v ECO
10
20
35
vCBO
15
25
40
v EBO
15
25
40
•c 100
PD 400
Unit Vdc Vdc Vdc
mAdc
mW
2.3 mW/°C Pd 2.0 Watts
TJ' Tstg
11.43
65 to + 200
mW/°C
°C
THERMAL CHARACTERISTICS
Characteristic Thermal Resistance, Junction to Case
Thermal Resistance, Junction to Ambient
Symbol R&jc R 9JA
Max
87.5 435
Unit °C/W °c/w
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted.
2N2944 Datasheet
