©2002 Fairchild Semiconductor Corporation Rev. A2, August 2002
BC546/547/548/549/550
NPN Epitaxial Silicon Transistor
Absolute Maximum Ratings Ta=25°C unless otherwise noted
Electrical Characteristics Ta=25°C unless otherwise noted
hFE Classification
Symbol Parameter Value Units
VCBO Collector-Base Voltage : BC546
: BC547/550
: BC548/549
80
50
30
V
V
V
VCEO Collector-Emitter Voltage : BC546
: BC547/550
: BC548/549
65
45
30
V
V
V
VEBO Emitter-Base Voltage : BC546/547
: BC548/549/550 6
5V
V
ICCollector Current (DC) 100 mA
PCCollector Power Dissipation 500 mW
TJJunction Temperature 150 °C
TSTG Storage Temperature -65 ~ 150 °C
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
IC=100mA, IB=5mA 90
200 250
600 mV
mV
VBE (sat) Base-Emitter Saturation Voltage IC=10mA, IB=0.5mA
IC=100mA, IB=5mA 700
900 mV
mV
VBE (on) Base-Emitter On Voltage VCE=5V, IC=2mA
VCE=5V, IC=10mA 580 660 700
720 mV
mV
fTCurrent 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=1 MHz 9 pF
NF Noise Figure : BC546/547/548
: BC549/550
: BC549
: BC550
VCE=5V, IC=200µA
f=1KHz, RG=2KΩ
VCE=5V, IC=200µA
RG=2KΩ, f=30~15000MHz
2
1.2
1.4
1.4
10
4
4
3
dB
dB
dB
dB
Classification A B C
hFE 110 ~ 220 200 ~ 450 420 ~ 800
BC546/547/548/549/550
Switching and Applications
• High Voltage: BC546, VCEO=65V
• Low Noise: BC549, BC550
• Complement to BC556 ... BC560
1. Collector 2. Base 3. Emitter
TO-92
1
©2002 Fairchild Semiconductor Corporation Rev. A2, August 2002
BC546/547/548/549/550
Typical Characteristics
Figure 1. Static Characteristic Figure 2. Transfer Characteristic
Figure 3. DC current Gain Figure 4. Base-Emitter Saturation Voltage
Collector-Emitter Saturation Voltage
Figure 5 . Output Capac itance Figure 6. Curr e nt Gain Band width Produ c t
02468101214161820
0
20
40
60
80
100
IB = 50 µA
IB = 100µA
IB = 150µA
IB = 200µA
IB = 250µA
IB = 300µA
IB = 350µA
IB = 400µA
IC[mA], COLLECTOR CURRENT
VCE[V], COLLECTOR-EMITTER VOLTAGE
0.0 0.2 0.4 0.6 0.8 1.0 1.2
0.1
1
10
100
VCE = 5V
IC[mA], COLLECTOR CURRENT
VBE[V], BASE-EMITTER VOLTAGE
1 10 100 1000
1
10
100
1000
VCE = 5V
hFE, DC CURRENT GAIN
IC[mA], COLLECTOR CURRENT
1 10 100 1000
10
100
1000
10000
IC = 10 IB
VCE(sat)
VBE(sat)
VBE(sat), VCE(sat )[mV], SATURATION VOLTAGE
IC[A], COLLECTOR CURRENT
1 10 100 1000
0.1
1
10
100
f=1MHz
IE = 0
Cob[pF], CAPACITANCE
VCB[V], COLLECTOR-BASE VOLTAGE
0.1 1 10 100
1
10
100
1000
VCE = 5V
fT, CURRENT GAIN-BANDWIDTH PRODUCT
IC[mA], COLLECTOR CURRENT
Package Dimensions
BC546/547/548/549/550
0.46 ±0.10
1.27TYP
(R2.29)
3.86MAX
[1.27 ±0.20]1.27TYP
[1.27 ±0.20]
3.60 ±0.20
14.47 ±0.40
1.02 ±0.10
(0.25) 4.58 ±0.20
4.58 +0.25
–0.15
0.38 +0.10
–0.05
0.38 +0.10
–0.05
TO-92
Dimensions in Millimeters
©2002 Fairchild Semiconductor Corporation Rev. A2, August 2002
©2002 Fairchild Semiconductor Corporation Rev. I1
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result in significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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zHigh Voltage VCEO=65V
zLow Noise: BC549,BC550
zComplement to BC556...BC560
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Product Product status Pb-free Status Pricing* Package type Leads Packing method Package Marking Convention**
BC550 Full Production $0.0473 TO-92 3BULK
Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&3 (3-Digit Date Code)
Line 2: BC Line 3: 550
BC550ABU Full Production $0.0238 TO-92 3BULK Line 1: BC550 Line 2: A Line 3: -&3
Related Links
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Models
BC550ATA Full Production $0.0238 TO-92 3 AMMO Line 1: BC550 Line 2: A Line 3: -&3
BC550B Full Production $0.0473 TO-92 3BULK
Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&3 (3-Digit Date Code)
Line 2: BC Line 3: 550B
BC550BBU Full Production $0.0238 TO-92 3BULK Line 1: BC550 Line 2: B Line 3: -&3
BC550BTA Full Production $0.0238 TO-92 3 AMMO Line 1: BC550 Line 2: B Line 3: -&3
BC550BTAR Full Production $0.0238 TO-92 3 AMMO Line 1: BC550 Line 2: B Line 3: -&3
BC550BU Full Production $0.0238 TO-92 3BULK Line 1: BC550 Line 3: -&3
BC550CBU Full Production $0.0238 TO-92 3BULK Line 1: BC550 Line 2: C Line 3: -&3
BC550CTA Full Production $0.0238 TO-92 3 AMMO Line 1: BC550 Line 2: C Line 3: -&3
* Fairchild 1,000 piece Budgetary Pricing
** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please
contact a Fairchild distributo
to obtain samples
Indicates product with Pb-free second-level interconnect. For more information click here.
Package marking information for product BC550 is available. Click here for more information .
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Qualification Support
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Package & leads Condition Temperature range Software version Revision date
PSPICE
TO-92-3 Electrical/Thermal -25°C to 100°C 9.2 Apr 12, 2001
Product
BC550
BC550ABU
BC550ATA
BC550B
BC550BBU
BC550BTA
BC550BTAR
BC550BU
BC550CBU
BC550CTA
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