PNP Transistor BC 559 (BJT)

🔋 BC559 – PNP Bipolar Junction Transistor (BJT)

The BC559 is a general-purpose PNP BJT designed for low-noise stages in audio, switching, and small-signal amplification. It’s commonly used in low-current applications due to its low noise and good gain.

📌 Specifications:

• Type: PNP small-signal transistor

• Package: TO-92

• Collector-Emitter Voltage (V_CEO): 30V

• Collector Current (I_C): 100mA

• Power Dissipation (P_tot): 500mW

• DC Current Gain (h_FE): 110 – 800 (varies with sub-type A/B/C)

• Noise Figure: Low noise, ideal for audio

• Transition Frequency (f_T): ~150 MHz

📦 Applications:

• Low-noise audio preamplifiers

• Signal amplification

• Low current switching

• Sensor interface circuits