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BF257 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. BF257
Description  HIGH VOLTAGE VIDEO AMPLIFIERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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BF257 Datasheet(HTML) 1 Page - STMicroelectronics

   
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BF257
BF258-BF259
October 1988
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.
ABSOLUTE MAXIMUM RATINGS
Val ue
Symbol
Parameter
BF 257
BF258
BF25 9
Unit
VCBO
Collector-base Voltage (IE = 0)
160
250
300
V
VCEO
Collector-emitter Voltage (IB = 0)
160
250
300
V
VEBO
Emitter-base Voltage (IC =0)
5
V
I C
Collector Current
100
mA
I CM
Collector Peak Current
200
mA
Ptot
Total Power Dissipation at Tamb ≤ 50 °C5
W
T stg
Storage Temperature
– 55 to 200
°C
T j
Junction Temperature
200
°C
INTERNAL SCHEMATIC DIAGRAM
TO-39
1/5


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