BF420, BF422
Small Signal Transistors (NPN)
TO-92
.181 (4.6)
min. .492 (12.5) .181 (4.6)
.142 (3.6)
♦
NPN Silicon Epitaxial Planar Transistors
especially suited for application in class-B
video output stages of TV receivers and
monitors.
FEATURES
♦
As complementary types, the PNP
transistors BF421 and BF423 are
recommended
max.
∅
.022 (0.55)
.098 (2.5)
E
C
B
MECHANICAL DATA
Case:
TO-92 Plastic Package
Weight:
approx. 0.18 g
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 °C ambient temperature unless otherwise specified
Symbol
Collector-Base Voltage
Collector-Emitter Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Collector Current
Peak Collector Current
Power Dissipation at T
amb
= 25 °C
Junction Temperature
Storage Temperature Range
1)
Value
300
250
250
300
5
50
100
830
1)
150
–65 to +150
Unit
V
V
V
V
V
mA
mA
mW
°C
°C
BF420
BF422
BF422
BF420
V
CBO
V
CBO
V
CEO
V
CER
V
EBO
I
C
I
CM
P
tot
T
j
T
S
Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case
4/98
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