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BC547B NPN Transistor: Pinout, Datasheet, and Equivalent

BC547 Series 45 V CE Breakdown .1 A NPN Epitaxial Silicon Transistor - TO-92

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Jul 26, 2021

Phyllis Church

Building a Clap switch Circuit (Using 555 Timer and BC547B transistor)

 

BC547 Series 45 V CE Breakdown .1 A NPN Epitaxial Silicon Transistor - TO-92

The BC547B is an NPN general purpose transistor especially suited for use in driver stages of audio amplifiers, low noise input stages of tape recorders, HI-FI amplifiers, signal processing circuits of television receivers etc.

BC547B

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BC547B Description

The BC547B is an NPN general purpose transistor in TO-92 package. It is especially suited for use in driver stages of audio amplifiers, low noise input stages of tape recorders, HI-FI amplifiers, signal processing circuits of television receivers etc.

BC547B Pinout

BC547B CAD Model

Symbol

 

Footprint

 

3D Model

BC547B Features

  • Type: NPN

  • Package: TO-92

  • Max DC collector current: 100 mA

  • Max collector to emitter voltage: 45 V

  • Max collector base voltage: 50 V

  • Max emitter base voltage: 6 V

  • Max power dissipation: 500 mW

  • Max operating frequency: 300 MHz

  • Collector to emitter saturation voltage: 250 mV

  • DC current gain: 110 @ Ic = 2 mA

  • Operating junction temperature range: -65°C to 150°C

 

Specifications

ON Semiconductor BC547B technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor BC547B.

BC547B Tech Specifications

ON Semiconductor BC547B technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor BC547B.

Product Attribute Attribute Value
Lifecycle StatusACTIVE (Last Updated: 6 days ago)
Factory Lead Time6 Weeks
Contact PlatingCopper, Silver, Tin
MountThrough Hole
Mounting TypeThrough Hole
Package / CaseTO-226-3, TO-92-3 (TO-226AA)
Number of Pins3Pins
Supplier Device PackageTO-92-3
Weight200.005886mg
Manufacturer Package IdentifierMKT-ZA03DREV3
Collector-Emitter Breakdown Voltage45V
Collector-Emitter Saturation Voltage250mV
Current-Collector (Ic) (Max)100mA
Number of Elements1 Element
hFEMin200
Operating Temperature150°C TJ
PackagingBulk
Published2005
Product Attribute Attribute Value
Part StatusActive
Moisture Sensitivity Level (MSL)1 (Unlimited)
Max Operating Temperature150°C
Min Operating Temperature-65°C
Voltage - Rated DC45V
Max Power Dissipation500mW
Current Rating100mA
Frequency300MHz
Base Part NumberBC547
PolarityNPN
Voltage40V
Element ConfigurationSingle
Current1A
Power Dissipation500mW
Power - Max500mW
Gain Bandwidth Product100MHz
Transistor TypeNPN
Collector Emitter Voltage (VCEO)45V
Product Attribute Attribute Value
Max Collector Current100mA
DC Current Gain (hFE) (Min) @ Ic, Vce200 @ 2mA 5V
Current - Collector Cutoff (Max)15nA ICBO
Vce Saturation (Max) @ Ib, Ic600mV @ 5mA, 100mA
Voltage - Collector Emitter Breakdown (Max)45V
Max Frequency300MHz
Max Breakdown Voltage45V
Frequency - Transition300MHz
Collector Base Voltage (VCBO)50V
Emitter Base Voltage (VEBO)6V
Height4.58mm
Length4.58mm
Width3.86mm
REACH SVHCNo SVHC
Radiation HardeningNo
RoHS StatusROHS3 Compliant
Lead FreeLead Free
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BC547B Functional Alternatives

Where to use BC547B

As a widely used general purpose transistor, the BC547B can be used as small signal and current amplifiers, for example, LED drive amplifiers, oscillators, audio amplifiers, and relay drive amplifiers.

BC547B Applications

  • General purpose switching and amplification

  • Current amplifier

  • Quick switching

  • Pulse-width modulation

  • Audio, Signal Processing, Power Management

  • Well suitable for TV and home appliance equipment

  • Small load switch transistors with high gain and low saturation voltage

BC547B Application Circuits

Audio-Frequency Amplifier

 

Radio-Frequency Amplifier

 

Radio-Frequency Oscillator

BC547B Package

BC547B Manufacturer

ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

Datasheet PDF

Download datasheets and manufacturer documentation for ON Semiconductor BC547B.

BC547B Documents

Download datasheets and manufacturer documentation for BC547B

Frequently Asked Questions

1.What is BC547B transistor?
A BC547B Transistor is an NPN (Negative-Positive-Negative) Bipolar Transistor: the most commonly used transistor configuration. The BC547B Collector is connected to the positive (+ve) supply via the load.
2.What’s the difference between BC547 and BC547B?
The most important difference is their hFE. The hFE of BC547 is 110 - 800 while the hFE of BC547B is 200 - 450.
3.How do I use BC547 as a switch?
1. Place Transistor on a breadboard. 2. Connect Emitter to the ground of the battery. 3. Add LED & 330 Ohm Resistor to Collector of BC547. 4. Connect 1k Resistor and Switch to Base of transistor. 5. Power up the circuit with 9V Battery.
FAQ
1.What is BC547B transistor?
A BC547B Transistor is an NPN (Negative-Positive-Negative) Bipolar Transistor: the most commonly used transistor configuration. The BC547B Collector is connected to the positive (+ve) supply via the load.
2.What’s the difference between BC547 and BC547B?
The most important difference is their hFE. The hFE of BC547 is 110 - 800 while the hFE of BC547B is 200 - 450.
3.How do I use BC547 as a switch?
1. Place Transistor on a breadboard. 2. Connect Emitter to the ground of the battery. 3. Add LED & 330 Ohm Resistor to Collector of BC547. 4. Connect 1k Resistor and Switch to Base of transistor. 5. Power up the circuit with 9V Battery.

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