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Topics: Harshad number, Trigraph, Bipolar junction transistor Pages: 20 (1074 words) Published: April 8, 2013
BC107
BC108
LOW NOISE GENERAL PURPOSE AUDIO AMPLIFIERS
DESCRIPTION
The BC107 and BC108 are silicon planar
epitaxial NPN transistors in TO-18 metal case.
They are suitable for use in driver stages, low
noise input stages and signal processing circuits
of television reveivers. The PNP complemet for
BC107 is BC177.

TO-18

INTERNAL SCHEMATIC DIAGRAM

ABSOLUTE MAXIMUM RATINGS
Symbol

Parameter

Value

Unit

BC107

BC108

V CBO

Collector-Base Voltage (IE = 0)

50

30

V CEO

Collector-Emitter Voltage (I B = 0)

45

20

V

V EBO

Emitter-Base Voltage (I C = 0)

6

5

V

IC

Collector Current

100
o

P t ot

Total Dissipation at T amb ≤ 25 C
o
at T case ≤ 25 C

T stg

St orage Temperature

Tj

Max. Operating Junction Temperature

November 1997

V

mA

0.3
0.75

W
W

-55 to 175

o

C

175

o

C
1/6

BC107/BC108
THERMAL DATA
R t hj-ca se
R t hj- amb

Thermal Resistance Junction-Case
Thermal Resistance Junction-Ambient

Max
Max

o

200
500

o

C/W
C/W

ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified) Symb ol
I CBO

Parameter
Collector Cut-off
Current (IE = 0)

Test Cond ition s

Max.

Un it

o

15
15

nA
µA

o

for BC107
V CB = 40 V
V CB = 40 V
for BC108
V CB = 20 V
V CB = 20 V

Min.

Typ .

15
15

µA
µA

T ca s e = 150 C

T ca s e = 150 C

Collector-Base
Breakdown Voltage
(IE = 0)

I C = 10 µ A
for BC107
for BC108

50
30

V
V

V ( BR)CEO ∗ Collector-Emitter
Breakdown Voltage
(I B = 0)

I C = 10 mA
for BC107
for BC108

45
20

V
V

V (BR)EBO

Emitter-Base
Breakdown Voltage
(I C = 0)

I E = 10 µ A
for BC107
for BC108

6
5

V
V

V CE(sat )∗

Collector-Emitter
Saturation Voltage

I C = 10 mA
I C = 100 mA

IB = 0.5 mA
I B = 5 mA

70
200

V BE(s at)∗

Base-Emitter
Saturation Voltage

I C = 10 mA
I C = 100 mA

IB = 0.5 mA
I B = 5 mA

750
950

V BE(on) ∗

Base-Emitter O n
Voltage

I C = 2 mA
I C = 10 mA

VCE = 5 V
V CE = 5 V

h FE∗

DC Current G ain

I C = 2 mA
for BC107
for BC107
for BC107
for BC108
for BC108
for BC108
for BC108
I C = 10 µ A
for BC107
for BC107
for BC107
for BC108
for BC108
for BC108
for BC108

VCE = 5 V

V (BR)CBO

h fe ∗

Small Signal Current
Gain

Gr. A
Gr. B
Gr. C
V CE = 5 V

650
700

110
110
200
110
110
200
420

Gr. A
Gr. B

40

Gr. A
Gr. B
Gr. C

40
100

I C = 2 mA
V CE = 5 V
f = 1KHz
for BC107
for BC107 Gr. A
for BC107 Gr. B
for BC108
for BC108 Gr. A
for BC108 Gr. B
for BC108 Gr. C
I C = 10 mA VCE = 10 V f = 100 MHz

∗ Pulsed: Pulse duration = 300 µs, duty cycle ≤ 1 %

2/6

Gr. A
Gr. B

550

250
600

mV
mV
700
770
450
220
450
800
220
450
800

120
90
150
120
90
150
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