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SILICON NPN TRANSISTORS
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2N3439
2N3440 ® SILICON NPN TRANSISTORS
■ ■ STMicroelectronics PREFERRED
SALESTYPES
NPN TRANSISTOR DESCRIPTION
The 2N3439 and 2N3440 are silicon epitaxial
planar NPN transistors in jedec TO-39 metal case
designed for use in consumer and industrial
line-operated applications.
These devices are particularly suited as drivers in
high-voltage low current inverters, switching and
series regulators. TO-39 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit 2N3439 2N3440
300 V 250 V V CBO Collector-Base Voltage (I E = 0) 450 V CEO Collector-Emitter Voltage (I B = 0) 350 V EBO Emitter-Base Voltage (I C = 0) 7 V IC Collector Current 1 A IB Base Current 0.5 A P tot Total Dissipation at T c ≤ 25 o C 10 W P tot Total Dissipation at T amb ≤ 50 o C
Storage Temperature T stg
Tj Max. Operating Junction Temperature December 2000 1 W -65 to 200 o C 200 o C
1/4 2N3439 / 2N3440
THERMAL DATA
R thj-case
R thj-amb Thermal Resistance Junction-case
Thermal Resistance Junction-ambient Max
Max o 17.5
175 o C/W …
