BC546/547/548/549/550
Switching and Amplifier
" High Voltage: BC546, VCEO=65V
" Low Noise: BC549, BC550
" Complement to BC556 ... BC560
TO-92
1
1. Collector 2. Base 3. Emitter
NPN Epitaxial Silicon Transistor
Absolute Maximum Ratings Ta=25°C unless otherwise noted
Symbol Parameter Value Units
VCBO Collector-Base Voltage : BC546 80 V
: BC547/550 50 V
: BC548/549 30 V
VCEO Collector-Emitter Voltage : BC546 65 V
: BC547/550 45 V
: BC548/549 30 V
VEBO Emitter-Base Voltage : BC546/547 6 V
: BC548/549/550 5 V
IC Collector Current (DC) 100 mA
PC Collector Dissipation 500 mW
TJ Junction Temperature 150 °C
TSTG Storage Temperature -65 ~ 150 °C
Electrical Characteristics Ta=25°C unless otherwise noted
Symbol Parameter Test Condition Min. Typ. Max. Units
ICBO Collector Cut-off Current VCB=30V, IE=0 15 nA
hFE DC Current Gain VCE=5V, IC=2mA 110 800
VCE (sat) Collector-Emitter Saturation Voltage IC=10mA, IB=0.5mA 90 250 mV
IC=100mA, IB=5mA 200 600 mV
VBE (sat) Base-Emitter Saturation Voltage IC=10mA, IB=0.5mA 700 mV
IC=100mA, IB=5mA 900 mV
VBE (on) Base-Emitter On Voltage VCE=5V, IC=2mA 580 660 700 mV
VCE=5V, IC=10mA 720 mV
fT Current Gain Bandwidth Product VCE=5V, IC=10mA, f=100MHz 300 MHz
Cob Output Capacitance VCB=10V, IE=0, f=1MHz 3.5 6 pF
Cib Input Capacitance VEB=0.5V, IC=0, f=1MHz 9 pF
NF Noise Figure : BC546/547/548 VCE=5V, IC=200µA 2 10 dB
: BC549/550 f=1KHz, RG=2K&! 1.2 4 dB
: BC549 VCE=5V, IC=200µA 1.4 4 dB
: BC550 RG=2K&!, f=30~15000MHz 1.4 3 dB
hFE Classification
Classification A B C
hFE 110 ~ 220 200 ~ 450 420 ~ 800
©2000 Fairchild Semiconductor International Rev. A, February 2000
BC546/547/548/549/550
Typical Characteristics
100 100
VCE = 5V
IB = 400 źA
80
IB = 350 źA
IB = 300 źA
10
IB = 250 źA
60
IB = 200 źA
40
IB = 150 źA
1
IB = 100 źA
20
IB = 50 źA
0 0.1
0 2 4 6 8 10 12 14 16 18 20 0.0 0.2 0.4 0.6 0.8 1.0 1.2
VCE[V], COLLECTOR-EMITTER VOLTAGE VBE[V], BASE-EMITTER VOLTAGE
Figure 1. Static Characteristic Figure 2. Transfer Characteristic
10000
VCE = 5V
IC = 10 IB
1000
VBE(sat)
1000
100
100
10
VCE(sat)
1 10
1 10 100 1000 1 10 100 1000
IC[mA], COLLECTOR CURRENT IC[A], COLLECTOR CURRENT
Figure 3. DC current Gain Figure 4. Base-Emitter Saturation Voltage
Collector-Emitter Saturation Voltage
100 1000
VCE = 5V
f=1MHz
IE = 0
10 100
1 10
0.1 1
1 10 100 1000 0.1 1 10 100
VCB[V], COLLECTOR-BASE VOLTAGE IC[mA], COLLECTOR CURRENT
Figure 5. Output Capacitance Figure 6. Current Gain Bandwidth Product
©2000 Fairchild Semiconductor International Rev. A, February 2000
BC546/547/548/549/550
C
C
I [mA], COLLECTOR CURRENT
I [mA], COLLECTOR CURRENT
FE
h
, DC CURRENT GAIN
BE
CE
V
(sat), V
(sat)[mV], SATURATION VOLTAGE
ob
C [pF], CAPACITANCE
T
f , CURRENT GAIN-BANDWIDTH PRODUCT
Package Demensions
TO-92
+0.25
4.58
 0.15
0.46 Ä…0.10
+0.10
1.27TYP 1.27TYP
0.38
 0.05
[1.27 Ä…0.20] [1.27 Ä…0.20]
3.60 Ä…0.20
(R2.29)
Dimensions in Millimeters
©2000 Fairchild Semiconductor International Rev. A, February 2000
BC546/547/548/549/550
4.58
Ä…
0.20
14.47
Ä…
0.40
3.86MAX
(0.25)
+0.10
 0.05
0.38
1.02
Ä…
0.10
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
ACEx"! HiSeC"! SuperSOT"!-8
Bottomless"! ISOPLANAR"! SyncFET"!
CoolFET"! MICROWIRE"! TinyLogic"!
CROSSVOLT"! POP"! UHC"!
E2CMOS"! PowerTrench® VCX"!
FACT"! QFET"!
FACT Quiet Series"! QS"!
FAST® Quiet Series"!
FASTr"! SuperSOT"!-3
GTO"! SuperSOT"!-6
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL.
As used herein:
1. Life support devices or systems are devices or systems 2. A critical component is any component of a life support
which, (a) are intended for surgical implant into the body, device or system whose failure to perform can be
or (b) support or sustain life, or (c) whose failure to perform reasonably expected to cause the failure of the life support
when properly used in accordance with instructions for use device or system, or to affect its safety or effectiveness.
provided in the labeling, can be reasonably expected to
result in significant injury to the user.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information Formative or In This datasheet contains the design specifications for
Design product development. Specifications may change in
any manner without notice.
Preliminary First Production This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
No Identification Needed Full Production This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete Not In Production This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
©2000 Fairchild Semiconductor International Rev. E


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