BC556B TRANSISTOR
Product Title: BC556B (Marking: BC556B / 331) 65V 100mA PNP General Purpose Small Signal Transistor (TO-92)
Product Specifications:
- Part Number / Top Marking: BC556B (Top Marking: BC556B / 331)
- Manufacturer: ON Semiconductor / Fairchild / STMicroelectronics
- Device Type: PNP Silicon Epitaxial Planar Small Signal Transistor
- Package / Case: TO-92 (TO-226AA 3-Pin Plastic Through-Hole Package)
- Pin Configuration: 1-Collector, 2-Base, 3-Emitter (CBE - Standard European Pinout facing flat side)
- Complementary NPN Transistor: BC546B
- Primary Applications: Low-Noise Audio Preamplifiers, Signal Processing Circuits, Small Load Driver Switching, Sensor Signal Amplification, General Purpose Switching
- Operating Junction Temperature Range: $-65^\circ\text{C}\text{ to }+150^\circ\text{C}$
Short Description: Industry-standard BC556B PNP general-purpose small signal transistor in a TO-92 through-hole package. Features high voltage breakdown ($65\text{V}$$V_{CEO}$), low noise output, and medium gain ($200\text{-}450$$h_{FE}$). Widely used in audio preamplifier input stages, low-power switching logic, sensor interfacing, and signal amplification circuits. Perfect replacement part for general circuit repair, DIY prototyping, audio equipment servicing, and industrial control board repairs.
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