switching and AF amplifier applications.
鈾?/div>
These transistors are subdivided into
three groups A, B and C according to
their current gain. The type BC556 is avail-
able in groups A and B, however, the types
BC557 and BC558 can be supplied in all three
groups. The BC559 is a low-noise type available
in all three groups. As complementary types, the
NPN transistors BC546 鈥?BC549 are recommended.
.098 (2.5)
max.
鈭?/div>
.022 (0.55)
鈾?/div>
On special request, these transistors are also manufac-
tured in the pin configuration TO-18.
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 擄C ambient temperature unless otherwise specified
Symbol
Collector-Base Voltage
BC556
BC557
BC558, BC559
BC556
BC557
BC558, BC559
BC556
BC557
BC558, BC559
鈥揤
CBO
鈥揤
CBO
鈥揤
CBO
鈥揤
CES
鈥揤
CES
鈥揤
CES
鈥揤
CEO
鈥揤
CEO
鈥揤
CEO
鈥揤
EBO
鈥揑
C
鈥揑
CM
鈥揑
BM
I
EM
P
tot
T
j
T
S
Value
80
50
30
80
50
30
65
45
30
5
100
200
200
200
500
1)
150
鈥?5 to +150
Unit
V
V
V
V
V
V
V
V
V
V
mA
mA
mA
mA
mW
擄C
擄C
Collector-Emitter Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Collector Current
Peak Collector Current
Peak Base Current
Peak Emitter Current
Power Dissipation at T
amb
= 25 擄C
Junction Temperature
Storage Temperature Range
1)
Valid provided that leads are kept at ambient temperature at a distance of 2 mm from case.
4/98
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