FEATURES
Small Signal Transistors (PNP)
Dimensions in inches and (millimeters)
.016 (0.4)
.056 (
1
.43
)
.037(0.95) .037(0.95)
ma
x
.
.004
(
0
.1
)
.122 (3.1)
.016 (0.4) .016 (0.4)
3
12
Top View
.102 (2.6)
.007 (
0
.17
5
)
.0
45 (
1
.15)
.118 (3.0)
.052 (
1
.33
)
.005
(
0
.1
25)
.094 (2.4)
.0
37 (
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
PNP Silicon Epitaxial Planar Transistors
especially suited for application in class-
B video output stages of TV receivers
and monitors.
As complementary types, the NPN tran-
sistors BF820 and BF822 are recommended.
Symbol Value Unit
Collector-Base Voltage BF821
BF823
–V
CBO
–V
CBO
300
250
V
V
Collector-Emitter Voltage BF823 –V
CEO
250 V
Collector-Emitter Voltage BF821 –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
BF821 = 1W
BF823 = 1Y
♦
♦
BF821, BF823