FEATURES
MECHANICAL DATA
Case: TO-92 Plastic Package
Weight: approx. 0.18 g
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Small Signal Transistors (NPN)
B
EC
.181 (4.6)
mi
n. .492
(
12.5)
.181 (
4
.6)
.142 (3.6)
Dimensions in inches and (millimeters)
TO-92
Ratings at 25 °C

ambient temperature unless otherwise specified
.098 (2.5)
max
.
∅ .022 (0.55)
4/98
BC546 THRU BC549
Symbol Value Unit
Collector-Base Voltage BC546
BC547
BC548, BC549
V
CBO
V
CBO
V
CBO
80
50
30
V
V
V
Collector-Emitter Voltage BC546
BC547
BC548, BC549
V
CES
V
CES
V
CES
80
50
30
V
V
V
Collector-Emitter Voltage BC546
BC547
BC548, BC549
V
CEO
V
CEO
V
CEO
65
45
30
V
V
V
Emitter-Base Voltage BC546, BC547
BC548, BC549
V
EBO
V
EBO
6
5
V
V
Collector Current I
C
100 mA
Peak Collector Current I
CM
200 mA
Peak Base Current I
BM
200 mA
Peak Emitter Current –I
EM
200 mA
Power Dissipation at T
amb
= 25 °C P
tot
500
1)
mW
Junction Temperature T
j
150 °C
Storage Temperature Range T
S
–65 to +150 °C
1)
Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case
NPN Silicon Epitaxial Planar Transistors
These transistors are subdivided into three groups
A, B and C according to their current gain. The type
BC546 is available in groups A and B, how-
ever, the types BC547 and BC548 can be
supplied in all three groups. The BC549 is a
low-noise type and available in groups B and
C. As complementary types, the PNP transis-
tors BC556 … BC559 are recommended.
On special request, these transistors are also
manufactured in the pin configuration TO-18.
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