TCD8550 Transistor PNP Transistor 25V 2A CDIL 8550 TCD8550

Product Overview:

A through-hole PNP silicon epitaxial planar medium-power bipolar junction transistor housed in a standard TO-92 plastic package. Despite its small TO-92 footprint, the 8550 is specifically engineered for high-current applications, capable of handling significantly more current than standard small-signal transistors. It is widely used in audio power amplifier output stages, mobile phone charger circuits, and as a low-voltage, high-current switch for driving LEDs, relays, and small motors. It is the direct PNP counterpart to the S8050 (or C8050) NPN transistor.

Core Specifications:

• Manufacturer: CDIL (Continental Device India Limited)

• Package Type: TO-92

• Function: PNP Medium-Power Transistor

• Maximum Collector-Emitter Voltage ($V_{CEO}$): 25V

• Maximum Continuous Collector Current ($I_C$): 2A

• Maximum Collector Power Dissipation ($P_C$): 1W (at ambient temperature $T_a = 25^\circ\text{C}$)

• Common Marking Code: S8550 / 8550 (CDIL often marks these as TCD8550)