BC547 NPN Transistor TO-92 | General-Purpose Low-Power Switching & Amplification BJT

The BC547 (and its close equivalent BC237) is a widely used NPN bipolar junction transistor (BJT) in a TO-92 through-hole package, ideal for low-power general-purpose switching and amplification applications. Known for its reliability, low noise, and high current gain performance, it is one of the most commonly used NPN transistors in analog, digital, and educational electronics.

With a 45V VCEO rating and 100 mA maximum collector current, the BC547 offers excellent versatility for signal switching, pre-amplifier stages, and basic electronic control circuits. Its high gain range (hFE 110–800, depending on suffix A/B/C) makes it suitable for a broad range of designs. The BC547 is also frequently used as a drop-in replacement for similar NPN devices such as BC237, S9014, and 2N3904.

Key Features:

• General-purpose NPN transistor

• TO-92 through-hole package

• 45V VCEO maximum

• 100 mA collector current rating

• 625 mW power dissipation

• High DC current gain (110–800, depending on grade)

• Suitable alternative to BC237, S9014 & 2N3904

• Perfect for low-power switching, amplification, and educational circuits

Package Includes:
1 x BC547 NPN Transistor

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