BF257 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
BF257 Datasheet PDF : 5 Pages
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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 videooutput
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
Pt ot
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
October 1988
Value
BF257 BF258 BF259
160
250
300
160
250
300
5
100
200
5
– 55 to 200
200
Unit
V
V
V
mA
mA
W
°C
°C
1/5
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