FMMT551TC

Transistors - Bipolar (BJT) - Single

FMMT551TC is a single PNP general purpose transistor with a plastic package. It has three terminals; collector, base, and emitter. This PNP silicon transistor is designed for medium power applications. It is used in a wide range of applications such as switching, amplification, and interface circuits.

Application field

The FMMT551TC PNP silicon transistor has a wide range of applications in digital and analog circuits. It is used in switching, amplification, and interface circuits. It is used in electronic equipment such as radio and television receivers, electronic measuring instruments, and other consumer electronic products.

The FMMT551TC PNP silicon transistor is used in general purpose low power applications such as switch circuits, relay driver circuits, electromagnetic relays, and sound cycle circuits. It is also used in audio frequency amplifier applications, power supply circuits, regulated voltage supply circuits, and switching circuits.

Working principle

The FMMT551TC PNP silicon transistor is a three terminal device that amplifies or switches electrical signals. It works as a current-controlled device and amplifies or switches current flowing through it. The base terminal controls the current flow through the emitter-collector path. It is biased in the direction (forward bias) of the collector current and the base-emitter junction is reverse biased.

The voltage applied to the base terminal determines the amount of current flowing through the emitter-collector path. When a small current is applied to the base terminal, a larger current is allowed to flow through the emitter-collector path. The current gain of the transistor is represented by the parameter hfe ( transfer ratio).

The FMMT551TC PNP silicon transistor can be used as a switch by controlling the current flow. With a suitable drive voltage, it can be used as an electronic switch, which can control the connection of two electrical circuits. In this way, the transistor can be used to control the current flow in a circuit and can be used for switching operations.

The FMMT551TC PNP silicon transistor can be used in a variety of applications such as switching, amplification, and interface circuits. It is such a versatile device that it can be used in a wide variety of low-power and medium-power applications.