November 2006 Rev 2 1/9
9
BC107
BC107B
Low noise general purpose audio amplifiers
Description
The BC107 and BC107B 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 receivers. The PNP complementary
types are BC177 and BC177B respectively.
Order codes
Internal schematic diagram
TO-18
Part Number Marking Package Packing
BC107 BC107 TO-18 Bag
BC107A BC107B TO-18 Bag
www.st.com
Electrical ratings BC107 - BC107B
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1 Electrical ratings
Table 1. Absolute maximum rating
Table 2. Thermal data
Symbol Parameter Value Unit
VCBO Collector-emitter voltage (IE = 0) 50 V
VCEO Collector-emitter voltage (IB = 0) 45 V
VEBO Emitter-base voltage (IC = 0) 6V
ICCollector current 100 mA
Ptot
Total dissipation at Tamb ≤ 25°C
at Tcase ≤ 25°C
0.3
0.75
W
W
Tstg Storage temperature -55 to 175 °C
TJMax. operating junction temperature 175 °C
Symbol Parameter Value Unit
Rthj-case
Rthj-amb
Thermal resistance junction-case __max
Thermal resistance junction-ambient __ max
200
500
°C/W
°C/W
BC107 - BC107B Electrical characteristics
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2 Electrical characteristics
(TCASE = 25°C; unless otherwise specified)
Table 3. Electrical characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
ICBO
Collector cut-off current
(IE = 0)
VCB = 40V
VCB = 40V TC = 150°C
15
15
nA
µA
V(BR)CBO
Collector-base breakdown
voltage (IE = 0) IC = 10µA50 V
V(BR)CEO(1) Collector-emitter breakdown
voltage (IB = 0) IC = 10mA 45 V
V(BR)EBO
Emitter-base breakdown voltage
(IC = 0) IE = 10µA6V
VCE(sat) (1) Collector-emitter saturation
voltage
IC = 10mA IB = 0.5mA
IC = 100mA IB = 5mA
70
200
250
600
mV
mV
VBE(sat) (1) Base-emitter saturation voltage IC = 10mA IB = 0.5mA
IC = 100mA IB = 5mA
750
950
mV
mV
VBE(on) (1) Base-emitter on voltage IC = 2mA VCE = 5V
IC = 10mA VCE = 5V
550 650
700
700
770
mV
mV
hFE DC current gain
IC = 2mA VCE = 5V
for BC107
for BC107B
IC = 10µA VCE = 5V
for BC107
for BC107B
110
200
40
120
150
450
450
hfe Small signal current gain
IC = 2mA VCE = 5V
f = 1kHz
for BC107
for BC107B
IC = 10mA VCE = 5V
f = 100MHz
250
300
2
CCBO Collector-base capacitance IE = 0 VCB = 10V
f = 1MHz 46pF
CEBO Emitter-base capacitance IC = 0 VEB = 0.5V
f = 1MHz 12 pF
NF Noise figure IC = 0.2mA VCE = 5V f = 1kHz
RG =2kΩ B=200Hz 210dB
hie Input impedance
IC = 2mA VCE = 5V
f = 1kHz
for BC107
for BC107B
4
4.8
kΩ
kΩ
Electrical characteristics BC107 - BC107B
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(1) Pulsed: Pulse duration = 300 µs, duty cycle ≤ 1 %
2.1 Electrical characteristics (curves)
hre Reverse voltage ratio
IC = 2mA VCE = 5V
f = 1kHz
for BC107
for BC107B
2.2
2.7
10-4
10-4
hoe Output admittance
IC = 2mA VCE = 5V
f = 1kHz
for BC107
for BC107B
30
26
µS
µS
Figure 1. DC normalized current gain Figure 2. Collector-emitter saturation
voltage
Figure 3. Collector-base capacitance Figure 4. Transition frequency
Symbol Parameter Test Conditions Min. Typ. Max. Unit
BC107 - BC107B Electrical characteristics
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Figure 5. Power rating chart
Package mechanical data BC107 - BC107B
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3 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in compliance
with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also
marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are
available at: www.st.com
BC107 - BC107B Package mechanical data
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DIM.
mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 12.7 0.500
B 0.49 0.019
D 5.3 0.208
E4.9 0.193
F 5.8 0.228
G 2.54 0.100
H1.2 0.047
I 1.16 0.045
L45
o
45
o
L
G
I
D A
F
E
B
H
C
TO-18 MECHANICAL DATA
0016043
Revision history BC107 - BC107B
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4 Revision history
Table 4. Revision history
Date Revision Changes
01-Dec-2002 1 First release
06-Nov-2006 2 The document has been reformatted
BC107 - BC107B
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