BC547 NPN bipolar junction transistor for general-purpose amplification and switching. Rated for 45 V collector-emitter voltage, 100 mA collector current, and 500 mW power dissipation.
Mfr Part #:

BC547

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
NPN bipolar junction transistor for general-purpose amplification and switching. Rated for 45 V collector-emitter voltage, 100 mA collector current, and 500 mW power dissipation.
Total Stock: 3,580 pcs
$ Price Range: $0.03

BC547 Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
3,500 pcs
3500 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
80 pcs
80 pcs On Request 1 On Request On Request On Request On Request On Request

BC547 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Frequency
Mounting Type
Operating Temperature
Power
Supplier Device Package
Tape & Reel
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

BC547 Description

Short technical summary and product information.

The BC547 is an NPN bipolar junction transistor from ON Semiconductor, designed for general-purpose amplification and switching applications. It features a maximum collector-emitter breakdown voltage of 45 V and can handle a continuous collector current of up to 100 mA. The transistor dissipates a maximum power of 500 mW.

 

Key electrical characteristics include a DC current gain (hFE) of 110 minimum at 2 mA collector current and 5 V collector-emitter voltage, a collector-emitter saturation voltage of 600 mV maximum at 5 mA base current and 100 mA collector current, and a typical transition frequency of 300 MHz. The device is housed in a through-hole TO-92-3 package (TO-226-3, TO-92-3 (TO-226AA)) and supports a maximum junction temperature of 150°C.

 

The BC547 is suitable for low-power switching and signal amplification in a wide range of electronic circuits, including audio preamplifiers, driver stages, and general-purpose logic interfaces. Its compact TO-92 package makes it easy to integrate into through-hole PCB designs.

BC547 Quick Information

Product Type: Bipolar (BJT) Transistor
Canonical Name: ON Semiconductor BC547 NPN Bipolar Transistor
Subcategory: NPN

BC547 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BC547 Estimated Pricing

Qty Low High
1+ $0.03 $0.03

Estimated market price range - modelled values for guidance only, not live distributor offers.

BC547 Features

  • NPN silicon bipolar junction transistor.
  • Maximum collector-emitter voltage of 45 V.
  • Continuous collector current up to 100 mA.
  • Power dissipation of 500 mW.
  • Transition frequency of 300 MHz typical.

BC547 Applications

  • General-purpose switching and amplification.
  • Signal processing in low-power circuits.
  • Driver stages for relays and LEDs.
  • Audio preamplifier stages.

BC547 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating?

45 V maximum.

What is the maximum collector current?

100 mA maximum.

What is the power dissipation?

500 mW maximum.

What is the DC current gain?

110 minimum at Ic=2mA, Vce=5V.

What package does the BC547 come in?

TO-92-3 (TO-226-3, TO-92-3 (TO-226AA)) through-hole package.

What is the maximum operating temperature?

150°C (junction).

Is the BC547 RoHS compliant?

RoHS3 compliant (unverified, low confidence).

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