BC 109 NPN

The BC 109 NPN is a low-noise transistor designed for audio amplification and general-purpose switching applications. It provides reliable, stable amplification and is widely used in circuits where signal clarity and consistent gain are required. Collector-Emitter Voltage: 45V for robust operation across varied voltages. Collector Current Rating: 200mA to support effective switching and moderate load currents. Gain Bandwidth Product: 100 MHz for efficient high-frequency response. Noise Figure: Low noise characteristic to enhance signal clarity in audio circuits. Package Type: TO-18 metal can for improved thermal stability and mechanical durability. Compared with typical silicon transistors in the same class, the BC 109 NPN stands out for its low noise output and stable gain, making it especially suitable for audio frequency applications and precision amplifier stages. Its performance characteristics help reduce distortion and preserve signal integrity in sensitive circuits. Design and manufacturing emphasize consistent switching speed and reliable gain across expected operating temperatures. The metal can TO-18 package improves heat dissipation and mechanical strength, contributing to long-term durability in demanding environments. With its combination of low noise, respectable gain bandwidth, and sturdy packaging, the BC 109 NPN offers dependable performance where frequency response and low distortion are important.