BC177 PNP Small Signal Transistor 45V 200mA TO-18 Metal Package

BC177 PNP Small Signal Transistor 45V 200mA TO-18 Metal Package

The BC177 is a low-noise PNP small-signal transistor designed for general-purpose amplification and switching applications.
With a collector-emitter voltage of 45V and a collector current of 200mA, it provides excellent gain, low noise, and reliable performance.
Encased in a TO-18 metal package, the BC177 offers superior thermal stability, mechanical strength, and long-term reliability, making it ideal for audio circuits, signal amplification, and precision analog designs.

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Features

• PNP Bipolar Junction Transistor (BJT) – suitable for low-power signal amplification and switching
• Voltage Rating: 45V (Collector-Emitter)
• Current Rating: 200mA continuous collector current
• Low Noise: Ideal for audio and sensitive signal applications
• High Gain (hFE): Provides efficient amplification
• TO-18 Metal Package: Excellent heat dissipation and mechanical durability
• Reliable & Stable: Performs consistently under varying temperature conditions
• RoHS Compliant: Lead-free and environmentally safe

Applications

• Audio preamplifiers and tone control circuits – low-noise signal amplification
• Small-signal amplification – analog and instrumentation circuits
• Switching circuits – low-current control applications
• Oscillator and timer circuits – stable frequency operation
• Sensor interfaces – noise-sensitive analog signal processing
• Hobby and educational electronics – general-purpose low-power use
• Replacement for classic or vintage circuits – compatible with legacy designs

bc177-transistor-datasheet