CD8550 Transistor CDIL PNP Transistor 8550 CDIL CD8550

Product Overview

The CD8550 (commonly known as the S8550 or 8550) is a popular, general-purpose PNP silicon transistor. It is widely used in medium-power, low-voltage applications, such as audio power amplifiers, signal processing, and as a general-purpose switch. Because of its relatively high current capacity for its size, it is frequently used to drive small relays, LEDs, or motors in consumer electronics and hobbyist projects. It is the PNP complement to the widely used NPN S8050 transistor.

Core Specifications

• Manufacturer: CDIL (Continental Device India Limited)

• Package Type: TO-92 (Through-Hole)

• Component Type: PNP Silicon Transistor (Complement to NPN S8050)

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

• Collector-Base Voltage ($V_{CBO}$): -40V

• Emitter-Base Voltage ($V_{EBO}$): -5V

• Continuous Collector Current ($I_C$): -1.5A

• Power Dissipation ($P_{tot}$): 625mW (at $T_A = 25^\circ C$)

• DC Current Gain ($h_{FE}$): 85 to 300 (Typically measured at $I_C = 100mA, V_{CE} = 1V$)

• Transition Frequency ($f_T$): 150 MHz (Minimum)

• Marking Code: 8550

• Part Number: CD8550