© Semiconductor Components Industries, LLC, 2002
May, 2021 − Rev. 3
1Publication Order Number:
BC550/D
NPN Epitaxial Silicon
Transistor
BC546 / BC547 / BC548 /
BC549 / BC550
Features
•Switching and Amplifier
•High−Voltage: BC546, VCEO = 65 V
•Low−Noise: BC549, BC550
•Complement to BC556, BC557, BC558, BC559, and BC560
•These are Pb−Free Devices
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Value Unit
Collector−Base Voltage
BC546
BC547 / BC550
BC548 / BC549
VCBO 80
50
30
V
Collector−Emitter Voltage
BC546
BC547 / BC550
BC548 / BC549
VCEO 65
45
30
V
Emitter−Base Voltage
BC546 / BC547
BC548 / BC549 / BC550
VEBO 6
5
V
Collector Current (DC) IC100 mA
Collector Power Dissipation PC500 mW
Junction Temperature TJ150 °C
Storage Temperature Range TSTG −65 to +150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the
device. If any of these limits are exceeded, device functionality should not be
assumed, damage may occur and reliability may be affected.
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TO−92
CASE 135AN
MARKING DIAGRAM
BC5xyz = Device Code
x = 4 or 5
y = 6, 7, 8, 9 or 0
z = A, B, C
A = Assembly Location
Y = Year
WW = Work Week
123
123
TO−92
CASE 135AR
See detailed ordering and shipping information on page 4 of
this data sheet.
ORDERING INFORMATION
ABC
5xyz
YWW
1. Collector 2. Base 3. Emitter
BC546 / BC547 / BC548 / BC549 / BC550
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2
ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted)
Symbol Parameter Test Condition Min. Typ. Max. Units
ICBO Collector Cut−off Current VCB = 30 V, IE = 0 15 nA
hFE DC Current Gain VCE = 5 V, IC = 2 mA 110 800
VCE(sat) Collector−Emitter Saturation Voltage IC = 10 mA, IB = 0.5 mA 90 250 mV
IC = 100 mA, IB = 5 mA 250 600
VBE(sat) Base−Emitter Saturation Voltage IC = 10 mA, IB = 0.5 mA 700 mV
IC = 100 mA, IB = 5 mA 900
VBE(on) Base−Emitter On Voltage VCE = 5 V, IC = 2 mA 580 660 700 mV
VCE = 5 V, IC = 10 mA 720
fTCurrent Gain Bandwidth Product VCE = 5 V, IC = 10 mA,
f = 100 MHz
300 MHz
Cob Output Capacitance VCB = 10 V, IE = 0, f = 1 MHz 3.5 6.0 pF
Cib Input Capacitance VEB = 0.5 V, IC = 0, f = 1 MHz 9 pF
NF Noise Figure BC546 / BC547 / BC548 VCE = 5 V, IC = 200 mA,
f = 1 kHz, RG = 2 kW
2.0 10.0 dB
BC549 / BC550 1.2 4.0
BC549 VCE = 5 V, IC = 200 mA,
RG = 2 kW, f = 30 to 15000 MHz
1.4 4.0
BC550 1.4 3.0
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
hFE CLASSIFICATION
Classification A B C
hFE 110 ~ 220 200 ~ 450 420 ~ 800
BC546 / BC547 / BC548 / BC549 / BC550
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3
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 1. Static Characteristic Figure 2. Transfer Characteristics
Figure 3. DC Current Gain
VCE, COLLECTOR EMITTER VOLTAGE (V)
Figure 4. Base−Emitter Saturation Voltage and
Collector−Emitter Saturation Voltage
Figure 5. Output Capacitance
0
20
40
60
80
100
0 2 4 6 8 101214161820
IB = 400 mA
IB = 350 mA
IB = 300 mA
IB = 250 mA
IB = 200 mA
IB = 150 mA
IB = 100 mA
IB = 50 mA
IC, COLLECTOR CURRENT (mA)
0.1
1
10
100
0.1 0.2 0.4 0.6 0.8 1.0 1.2
VCE = 5 V
VBE, BASE−EMITTER VOLTAGE (V)
IC, COLLECTOR CURRENT (mA)
1
10
100
1000
110 100 1000
IC, COLLECTOR CURRENT (mA)
hFE, DC CURRENT GAIN
10
100
1000
10000
VCE = 5 V IC = 10 IB
VBE(sat)
VCE(sat)
110
100 1000
IC, COLLECTOR CURRENT (mA)
VBE(sat), VCE(sat), SATURATION
VOLTAGE (mV)
0.1
1
10
100
110 100 1000
f = 1 MHz
IE = 0
VCB, COLLECTOR−BASE VOLTAGE (V)
Cob, CAPACITANCE (pF)
1
10
100
1000
IC, COLLECTOR CURRENT (mA)
0.1 1 10 100
fT
, CURRENT GAIN−BANDWIDTH
PRODUCT
Figure 6. Current Gain Bandwidth Product
VCE = 5 V
BC546 / BC547 / BC548 / BC549 / BC550
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4
ORDERING INFORMATION
Part Number Marking Package Packing Method†
BC546ABU BC546A TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC546ATA BC546A TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC546BTA BC546B TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC546BTF BC546B TO−92−3 (Pb−Free) 2000 / Tape & Reel
BC546CTA BC546C TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC547ATA BC547A TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC547B BC547B TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC547BBU BC547B TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC547BTA BC547B TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC547BTF BC547B TO−92−3 (Pb−Free) 2000 / Tape & Reel
BC547CBU BC547C TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC547CTA BC547C TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC547CTFR BC547C TO−92−3 (Pb−Free) 2000 / Tape & Reel
BC548BU BC548 TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC548BTA BC548B TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC548CTA BC548C TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC549BTA BC549B TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC549BTF BC549B TO−92−3 (Pb−Free) 2000 / Tape & Reel
BC549CTA BC549C TO−92−3 (Pb−Free) 2000 / Ammo Pack
BC550CBU BC550C TO−92−3 (Pb−Free) 10000 / Bulk Bag
BC550CTA BC550C TO−92−3 (Pb−Free) 2000 / Ammo Pack
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
TO−92 3 4.825x4.76
CASE 135AN
ISSUE O
DATE 31 JUL 2016
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
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TO−92 3 4.825X4.76
© Semiconductor Components Industries, LLC, 2019 www.onsemi.com
TO−92 3 4.83x4.76 LEADFORMED
CASE 135AR
ISSUE O
DATE 30 SEP 2016
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically
disclaims any and all liability, including without limitation special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the
rights of others.
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DOCUMENT NUMBER:
DESCRIPTION:
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Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
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TO−92 3 4.83X4.76 LEADFORMED
© Semiconductor Components Industries, LLC, 2019 www.onsemi.com
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1
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