NPN Silicon Transistors
With High Reverse Voltage
q
High breakdown voltage
q
Low collector-emitter saturation voltage
q
Low capacitance
q
Complementary types: BF 421, BF 423 (PNP)
2
3
1
BF 420
BF 422
Type
BF 420
BF 422
Marking
–
Ordering Code
Q62702-F531
Q62702-F495
Pin Configuration
1
2
3
E
C
B
Package
1)
TO-92
Maximum Ratings
Parameter
Collector-emitter voltage
Collector-emitter voltage
R
BE
= 2.7 k
Collector-base voltage
Emitter-base voltage
Collector current
Peak base current
Junction temperature
Storage temperature range
Thermal Resistance
Junction - ambient
Junction - case
2)
R
th JA
R
th JC
≤
150
≤
75
Symbol
V
CE0
V
CER
V
CB0
V
EB0
I
C
I
BM
T
j
T
stg
Values
BF 420
–
300
300
Unit
BF 422
250
–
250
5
50
100
830
150
– 65 … + 150
mW
˚C
mA
V
Total power dissipation,
T
C
= 88 ˚C
P
tot
K/W
1)
2)
For detailed information see chapter Package Outlines.
Mounted on Al heat sink 15 mm
×
25 mm
×
0.5 mm.
Semiconductor Group
1
5.91