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Bipolar transistors, also called junction type transistors, are a kind of transistors. Unlike field-effect transistors (unipolar transistors), they are called bipolar because they have two kinds of carriers (hole, electron)
BF423 Maximum Ratings
Symbol
Value
Unit
Collector-Base Voltage BF421 BF423
-VCBO -VCBO
300 250
V V
Collector-Emitter Voltage BF423
-VCEO
250
V
Collector-Emitter Voltage BF421
-VCER
300
V
Emitter-Base Voltage
-VEBO
5
V
Collector Current
-IC
50
mA
Peak Collector Current
-ICM
100
mA
Power Dissipation at Tamb = 25
Ptot
8301)
mW
Junction Temperature
Tj
150
Storage Temperature Range
TS
65 to +150
1)Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case.
BF423 Features
PNP Silicon Epitaxial Transistors especially suited for application in class-B video output stages of TV receivers and monitors. As complementary types, the NPN tran- sistors BF420 and BF422 are recom- mended.