Transistor BC558

Transistor BC548 NPN, 0.1A TO-92

Transistors

Reference: TRBC548

Part.No: BC548

€0.40

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The BC548 is a high-performance NPN Bipolar Junction Transistor (BJT) in a TO-92 package. Optimized for small signal amplification and low-power switching in Arduino, ESP32 and general-purpose DIY electronics.

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Description
Product Details

BC548 Small Signal Transistor - High Gain for Switching & Amplification

The BC548 is a versatile NPN transistor widely used for low-current signal amplification and switching applications. With excellent high-frequency response and stable gain characteristics, it is ideal for audio preamplifiers, sensor interfaces and MCU-driven switching circuits.

Functions & Applications

High Current Gain (hFE): Superior signal amplification even at low collector currents.
Standard TO-92 Package: Through-hole design, perfect for breadboarding and PCB prototyping.
Wide Frequency Response: Suitable for audio-frequency and low-frequency signal processing.
MCU Compatible: Directly driven by 3.3V and 5V logic outputs from Arduino, ESP32 and microcontroller pins.

Technical Specifications

Parameter	Value / Specification
Transistor Type	BJT (Bipolar Junction Transistor)
Polarity / Channel	NPN
Package / Case	TO-92
Collector-Emitter Voltage (Vceo)	50V
Max Collector Current (Ic)	100mA
Power Dissipation (Pd)	500mW
Mounting Type	Through-Hole (THT)

Frequently Asked Questions

Q: How does BC548 compare to BC547?
A: BC548 has slightly higher Vceo (50V vs 45V) and typically higher hFE, making it ideal for audio and lower-noise applications. BC547 is more rugged for general-purpose switching.

Q: What is the complementary PNP transistor for BC548?
A: The complementary PNP transistor is the BC558, offering matched characteristics for push-pull and balanced amplifier circuits.

Note: Price refers to one (1) piece. The component is shipped in bulk without individual packaging.

Transistor Type: BJT (Bipolar Junction Transistor)
Transistor Polarity / Channel: NPN
Transistor Case Style: TO-92

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