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The BC548 transistor is a commonly used NPN bipolar junction transistor (BJT) commonly used in electronics circuits. It is BC series transistor BC547, BC548, BC549 are from the same family. It is a three terminals electronics device that is used for amplification and switching. Transistor pin configuration is given below in the diagram. It comes in four module numbers BC548, BC548A, BC548B and BC548C. The Difference among the four is only their DC current gain performance. The current gain value of transistor 548 is from 110 to 800, 548A is from 110 to 220, 548B is from 200 to 450 and 548C is from 420 to 800.
BC548 Pinout
Pin configuration of and description of pins are given below in the table.
- Pin1 (Collector): The current supplies throughout the collector pin.
- Pin2 (Base): The base pin of this transistor controls the biasing.
- Pin3 (Emitter): Flow of current drains out through this pin.
Technical specifications
- Package Type: TO-92
- Bi-Polar: NPN Transistor
- Maximum Collector Current: 500mA
- Max Collector-Emitter Voltage: 30V
- Maximum Collector-Base Voltage: 30V
- Max Emitter-Base Voltage: 5V
- Transition Frequency: 150 MHz
- Max Collector Dissipation : 625MW
- Min & Max DC Current Gain: 110 – 800
- Max Storage & Operating temperature Should Be: -55 to +150C
BC548 transistor equivalent
The Transistor bc548 has several equivalent or similar transistors with similar electrical specifications. These equivalent transistors can be used for NPN 548 replacement. Here are some of the common equivalents for the transistor.
- 2N3904: The 2N3904 is an NPN transistor with similar characteristics.
- 2N2222: The 2N2222 is also NPN transistor and a good alternate of transistor bc548.
- 2N4401: The 2N4401 is also an NPN transistor with comparable specifications of 548.
- BC547: The BC547 and BC548 both are BC series NPN transistor with characteristics very close to the BC548.
- 2SC1815: The 2SC1815 is a similar NPN transistor with comparable characteristics to the 548 npn transistor.
Complement of BC548
The best complement of 548BC are BC556 and BC557.
SMD equivalents of transistor BC548
548 Common SMD equivalents are BC847 or BC847C available in various SMD package types.
BC548 transistor datasheet
BC548 transistor amplifier
In given below circuit we used 548 transistor as an amplifier circuit.
Difference between bc547 and 548 transistor
The difference between BC547 and 548 are given below.
548BC Transistor | BC547 Transistor |
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