BF257 Datasheet, PDF (1/3 Pages) STMicroelectronics – HIGH VOLTAGE VIDEO AMPLIFIERS

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BF257
BF258-BF259
HIGH VOLTAGE VIDEO AMPLIFIERS
DESCRIPTION
The BF257, BF258 and BF259 are silicon planar
epitaxial NPN transistors in Jedec TO-39 metal
case. They are particularly designed for video output
stages in CTV and MTV sets, class A audio output
stages and drivers for horizontal deflection circuits.
TO-39
INTERNAL SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VCBO
VCEO
VEBO
Ic
I CM
Plot
Tstg
Tj
Collector-base Voltage (IE =0)
Collector-emitter Voltage (IB = 0)
Emitter-base Voltage (Ic = 0)
Collector Current
Collector Peak Current
Total Power Dissipation at Tamb < 50 'C
Storage Temperature
Junction Temperature
Qualify Semi-Conductors
Value
BF257 BF258 BF259
160 250 300
160 250 300
5
100
200
5
- 55to 200
200
Unit
V
V
V
mA
mA
W
C
1C