BC 548

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The BC548 is a widely used NPN bipolar junction transistor (BJT) designed for general-purpose low current, low voltage, and medium-speed switching and amplification applications. It’s ideal for beginners, hobbyists, and professional circuit designers alike. Commonly found in audio preamps, logic circuits, and sensor interfacing, the BC548 offers reliability and ease of use in a small TO-92 package.

How It Works:
As an NPN transistor, the BC548 conducts when a small current is applied to its base terminal, allowing a larger current to pass from the collector to the emitter. It can be used to amplify weak signals or to act as an on/off switch for controlling loads like LEDs, buzzers, or other low-current components. It interfaces well with microcontrollers like Arduino, ESP32, and Raspberry Pi for basic control tasks.

Specifications:

Type: NPN Bipolar Junction Transistor
Collector-Emitter Voltage (Vce): 30V
Collector Current (Ic): 100mA max
Power Dissipation: 500mW
DC Current Gain (hFE): 110–800
Transition Frequency (fT): 150 MHz
Package: TO-92
Complementary Pair: BC558 (PNP version)

Limitations:

Limited to low-current applications (up to 100mA).
Not suitable for power switching or motor control.
Requires external resistors for biasing.
TO-92 package limits thermal dissipation—avoid high power loads.

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BC 548

৳5

Overview

Reviews

Detail Description

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