FEATURES
Small Signal Transistors (NPN)
Dimensions in inches and (millimeters)
.016 (0.4)
.056 (
1
.43
)
.037(0.95) .037(0.95)
m
a
x
.
.0
04 (
0
.1)
.122 (3.1)
.016 (0.4) .016 (0.4)
3
12
Top View
.102 (2.6)
.0
07 (
0
.175)
.045 (
1
.15)
.118 (3.0)
.052 (
1
.33
)
.
005 (
0
.125)
.094 (2.4)
.037 (
0
.95)

Case: SOT-23 Plastic Package
Weight: approx. 0.008 g
MECHANICAL DATA
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 °C

ambient temperature unless otherwise specified
Pin configuration
1 = Base, 2 = Emitter, 3 = Collector.
SOT-23
4/98
NPN Silicon Epitaxial Planar Transistors
especially suited for application in class-B
video output stages of TV receivers and
monitors.
As complementary types, the PNP tran-
sistors BF821 and BF823 are recom-
mended.
BF820, BF822
Symbol Value Unit
Collector-Base Voltage BF820
BF822
V
CBO
V
CBO
300
250
V
V
Collector-Emitter Voltage BF822 V
CEO
250 V
Collector-Emitter Voltage BF820 V
CER
300 V
Emitter-Base Voltage V
EBO
5V
Collector Current I
C
50 mA
Peak Collector Current I
CM
100 mA
Power Dissipation at T
SB
= 50 °C P
tot
300
1)
mW
Junction Temperature T
j
150 °C
Storage Temperature Range T
S
–65 to +150 °C
1)
Device on fiberglass substrate, see layout
Marking code
BF820 = 1V
BF822 = 1X
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