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background image

BC546 / BC547 / BC548 / BC549 / BC550  

NPN 

Epit

axia

l Silicon T

ransistor

 2002 Fairchild Semiconductor Corporation

  www.fairchildsemi.com

BC546 / BC547 / BC548 / BC549 / BC550 Rev. 1.1.1

November 2014

BC546 / BC547 / BC548 / BC549 / BC550
NPN Epitaxial Silicon Transistor

Features

 Switching and Amplifier

 High-Voltage: BC546, V

CEO 

= 65 V

 Low-Noise: BC549, BC550

 Complement to BC556, BC557, BC558, BC559, and BC560
 

Ordering Information

Part Number

Marking

Package

Packing Method

BC546ABU

BC546A

TO-92 3L

Bulk

BC546ATA

BC546A

TO-92 3L

Ammo

BC546BTA

BC546B

TO-92 3L

Ammo

BC546BTF

BC546B

TO-92 3L

Tape and Reel

BC546CTA

BC546C

TO-92 3L

Ammo

BC547ATA

BC547A

TO-92 3L

Ammo

BC547B

BC547B

TO-92 3L

Bulk

BC547BBU

BC547B

TO-92 3L

Bulk

BC547BTA

BC547B

TO-92 3L

Ammo

BC547BTF

BC547B

TO-92 3L

Tape and Reel

BC547CBU

BC547C

TO-92 3L

Bulk

BC547CTA

BC547C

TO-92 3L

Ammo

BC547CTFR

BC547C

TO-92 3L

Tape and Reel

BC548BU

BC548

TO-92 3L

Bulk

BC548BTA

BC548B

TO-92 3L

Ammo

BC548CTA

BC548C

TO-92 3L

Ammo

BC549BTA

BC549B

TO-92 3L

Ammo

BC549BTF

BC549B

TO-92 3L

Tape and Reel

BC549CTA

BC549C

TO-92 3L

Ammo

BC550CBU

BC550C

TO-92 3L

Bulk

BC550CTA

BC550C

TO-92 3L

Ammo

1. Collector   2. Base   3. Emitter

TO-92

1

background image

BC546 / BC547 / BC548 / BC549 / BC550  

NPN 

Epit

axia

l Silicon T

ransistor

 2002 Fairchild Semiconductor Corporation

  www.fairchildsemi.com

BC546 / BC547 / BC548 / BC549 / BC550 Rev. 1.1.1

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T

A

 = 25 C unless otherwise noted.

Electrical Characteristics

Values are at T

A

 = 25 C unless otherwise noted.

h

FE 

Classification

Symbol

Parameter

Value

Unit

V

CBO

Collector-Base Voltage

BC546

80

V

BC547 / BC550

50

BC548 / BC549

30

V

CEO

Collector-Emitter Voltage

BC546

65

V

BC547 / BC550

45

BC548 / BC549

30

V

EBO

Emitter-Base Voltage

BC546 / BC547

6

V

BC548 / BC549 / BC550

5

I

C

Collector Current (DC)

100

mA

P

C

Collector Power Dissipation

500

mW

T

J

Junction Temperature

150

C

T

STG

Storage Temperature Range

-65 to +150

C

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

I

CBO

Collector Cut-Off Current

V

CB 

= 30 V, I

= 0

15

nA

h

FE

DC Current Gain

V

CE 

= 5 V, I

= 2 mA

110

800

V

CE

(sat)

Collector-Emitter Saturation 
Voltage

I

= 10 mA, I

= 0.5 mA

90

250

mV

I

= 100 mA, I

= 5 mA

250

600

V

BE

(sat)

Base-Emitter Saturation Voltage

I

= 10 mA, I

= 0.5 mA

700

mV

I

= 100 mA, I

= 5 mA

900

V

BE

(on)

Base-Emitter On Voltage             

V

CE 

= 5 V, I

= 2 mA

580

660

700

mV

V

CE 

= 5 V, I

= 10 mA

720

f

T

Current Gain Bandwidth Product

V

CE 

= 5 V, I

= 10 mA, 

f = 100 MHz

300

MHz

C

ob

Output Capacitance

V

CB 

= 10 V, I

= 0, f = 1 MHz

3.5

6.0

pF

C

ib

Input Capacitance

V

EB 

= 0.5 V, I

= 0, f = 1 MHz

9

pF

NF

Noise 
Figure

BC546 / BC547 / BC548 V

CE 

= 5 V, I

= 200 

μA,

f = 1 kHz, R

= 2 k

2.0

10.0

dB

BC549 / BC550

1.2

4.0

BC549

V

CE 

= 5 V, I

= 200 

μA,

R

= 2 k

Ω, f = 30 to 15000 MHz

1.4

4.0

BC550

1.4

3.0

Classification

A

B

C

h

FE

110 ~ 220

200 ~ 450

420 ~ 800

background image

BC546 / BC547 / BC548 / BC549 / BC550  

NPN 

Epit

axia

l Silicon T

ransistor

 2002 Fairchild Semiconductor Corporation

  www.fairchildsemi.com

BC546 / BC547 / BC548 / BC549 / BC550 Rev. 1.1.1

Typical Performance Characteristics

Figure 1. Static Characteristic

Figure 2. Transfer Characteristic

Figure 3. DC Current Gain

Figure 4. Base-Emitter Saturation Voltage and

Collector-Emitter Saturation Voltage

Figure 5. Output Capacitance

Figure 6. Current Gain Bandwidth Product

0

2

4

6

8

10

12

14

16

18

20

0

20

40

60

80

100

I

B

 = 50

μ

A

I

B

 = 100

μ

A

I

B

 = 150

μ

A

I

B

 = 200

μ

A

I

B

 = 250

μ

A

I

B

 = 300

μ

A

I

B

 = 350

μ

A

I

B

 = 400

μ

A

 

 

I

C

[m

A

],

 CO

LL

ECT

O

R CURRENT

V

CE

[V], COLLECTOR-EMITTER VOLTAGE

0.0

0.2

0.4

0.6

0.8

1.0

1.2

0.1

1

10

100

V

CE

 = 5V

 

 

I

C

[m

A

], COLLECT

O

R

 CURRE

NT

V

BE

[V], BASE-EMITTER VOLTAGE

1

10

100

1000

1

10

100

1000

V

CE

 = 5V

 

 

h

FE

, DC C

URRENT

 GAIN

I

C

[mA], COLLECTOR CURRENT

1

10

100

1000

10

100

1000

10000

I

C

 = 10 I

B

V

CE

(sat)

V

BE

(sat)

 

 

V

BE

(sa

t), V

CE

(sa

t)[

m

V

],

 SAT

U

R

A

TIO

N

 VO

LT

AGE

I

C

[mA], COLLECTOR CURRENT

1

10

100

1000

0.1

1

10

100

f=1MHz

I

E

 = 0

 

 

C

ob

[pF]

, CA

PA

CITA

NCE

V

CB

[V], COLLECTOR-BASE VOLTAGE

0.1

1

10

100

1

10

100

1000

V

CE

 = 5V

 

 

f

T

CURR

ENT G

A

IN-B

ANDW

IDTH PRODUCT

I

C

[mA], COLLECTOR CURRENT

background image

BC546 / BC547 / BC548 / BC549 / BC550  

NPN 

Epit

axia

l Silicon T

ransistor

 2002 Fairchild Semiconductor Corporation

  www.fairchildsemi.com

BC546 / BC547 / BC548 / BC549 / BC550 Rev. 1.1.1

Physical Dimensions

Figure 7. 3-Lead, TO-92, JEDEC TO-92 Compliant Straight Lead Configuration, Bulk Type

        D

background image

BC546 / BC547 / BC548 / BC549 / BC550  

NPN 

Epit

axia

l Silicon T

ransistor

 2002 Fairchild Semiconductor Corporation

  www.fairchildsemi.com

BC546 / BC547 / BC548 / BC549 / BC550 Rev. 1.1.1

Physical Dimensions 

(Continued)

Figure 8. 3-Lead, TO-92, Molded, 0.2 In Line Spacing Lead Form, Ammo, Tape and Reel Type

background image

Fairchild Semiconductor Corporation 

 

www.fairchildsemi.com 

TRADEMARKS 
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not 
intended to be an exhaustive list of all such trademarks. 

AccuPower

Awinda

AX-CAP

*

BitSiC

Build it Now

CorePLUS

CorePOWER

CROSSVOLT
CTL

Current Transfer Logic

DEUXPEED

Dual Cool™ 
EcoSPARK

EfficientMax

ESBC

Fairchild

Fairchild Semiconductor

FACT Quiet Series

FACT

FAST

FastvCore

FETBench

FPS

F-PFS

FRFET

Global Power Resource

SM

GreenBridge

Green FPS

Green FPS

 e-Series

G

max

GTO

IntelliMAX

ISOPLANAR

Making Small Speakers Sound Louder 

and Better™

MegaBuck

MICROCOUPLER

MicroFET

MicroPak

MicroPak2

MillerDrive

MotionMax

MotionGrid

MTi

MTx

MVN

mWSaver

OptoHiT

OPTOLOGIC

OPTOPLANAR

PowerTrench

PowerXS™ 
Programmable Active Droop

QFET

QS

Quiet Series

RapidConfigure

Saving our world, 1mW/W/kW at a time™ 
SignalWise

SmartMax

SMART START

Solutions for Your Success

SPM

STEALTH

SuperFET

SuperSOT

-3 

SuperSOT

-6 

SuperSOT

-8 

SupreMOS

SyncFET

Sync-Lock™ 

*

TinyBoost

TinyBuck

TinyCalc

TinyLogic

TINYOPTO

TinyPower

TinyPWM

TinyWire

TranSiC

TriFault Detect

TRUECURRENT

*

μSerDes

UHC

Ultra FRFET

UniFET

VCX

VisualMax

VoltagePlus

XS™ 

Xsens™

* Trademarks of System General Corporation, used under license by Fairchild Semiconductor. 

DISCLAIMER 
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE 
RELIABILITY, FUNCTION, OR DESIGN. T

O OBTAIN THE LATEST, MOST UP-TO-DATE DATASHEET AND PRODUCT INFORMATION, VISIT OUR WEBSITE 

AT 

HTTP://WWW.FAIRCHILDSEMI.COM.

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. 
THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILDS WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY 
THEREIN, WHICH COVERS THESE PRODUCTS. 

LIFE SUPPORT POLICY 
FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE 
EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. 

As used herein: 

1.  Life support devices or systems are devices or systems which, (a) are 

intended for surgical implant into the body or (b) support or sustain 
life, and (c) whose failure to perform when properly used in 
accordance with instructions for use provided in the labeling, can be 
reasonably expected to result in a significant injury of the user. 

2.  A critical component in 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.  

ANTI-COUNTERFEITING POLICY 
Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, 
under Sales Support.  

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their 
parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed 
applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the 
proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild 
Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors 
are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical 
and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. 
Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global 
problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

PRODUCT STATUS DEFINITIONS 
Definition of Terms 

Datasheet Identification 

Product Status 

Definition 

Advance Information 

Formative / In Design 

Datasheet contains the design specifications for product development. Specifications may change 
in any manner without notice. 

Preliminary First 

Production 

Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild 
Semiconductor reserves the right to make changes at any time without notice to improve design. 

No Identification Needed 

Full Production 

Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make 
changes at any time without notice to improve the design. 

Obsolete 

Not In Production 

Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor.  
The datasheet is for reference information only. 

Rev. I72 


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