BCX56,135

Transistors - Bipolar (BJT) - Single

BCX56 and BCX135 are silicon NPN transistor components designed for switching and amplifier applications. These components are available in a TO-92 package, a three-terminal plastic package with a collector (C), base (B) and emitters (E). BCX56 and BCX135 have a maximum collector-emitter voltage of 60 V, a forward current gain of 150-550, and an operating temperature range of -55 to +150 C. These components are used in applications such as oscillator circuits, frequency multipliers, high voltage switching and low noise amplifier.

Applications

BCX56 and BCX135 transistors can be used in a variety of applications such as oscillator circuits, frequency multipliers, high-voltage switching and low-noise amplifiers. These components can be used to design circuits for modems, radio receivers, frequency multipliers and even amplification of signals. They can also be used for switching applications such as to drive lamps and small motors or for limiting current consumption.

In oscillator circuits, BCX56 and BCX135 transistors can be used to create a stable frequency signal. This signal can be used to control switch timing, drive relay coils and amplifier stages. When used as an amplifier, these transistors can provide a high current gain with a low voltage. They can also be used in active filters and signal processing circuits.

Working Principle

BCX56 and BCX135 transistors are made up of three layers: collector, base and emitter. The current flow in the transistor is based on the base-emitter voltage. When a small current enters the base, the transistor will amplify the base current and create larger current flow in the collector and emitter. When the base current increases, the transistor will act as a switch and turn on the transistor allowing the current to flow from the collector to the emitter. The reverse also applies; when the base current decreases, the transistor will switch off and the current will not be allowed to flow through.

The current gain of the transistor is called the beta factor. It is represented by the equation hfe = Ic/ Ib, where Ic is the collector current and Ib is the base current. The current gain of BCX56 and BCX135 is approximately 150 to 550 respectively.

The forward current gain of transistors includes two features, namely common-emitter current gain and common-collector current gain. Common-emitter current gain measures the ratio of the output current to the input current, while common-collector current gain measures the voltage transfer ratio between the transistor\'s input and output.

In addition to the current gain, transistors also have a voltage gain which is measured in volts per amp. The voltage gain of BCX56 and BCX135 transistors is around 40 to 90 volts per amp, respectively.

Conclusion

BCX56 and BCX135 transistors are components designed for switching and amplifier applications. Their main features include a maximum collector-emitter voltage of 60V and a forward current gain of 150-550. These components are used in oscillator circuits, frequency multipliers, high-voltage switching and low-noise amplifiers. The current and voltage gain of these transistors are approximately 150 to 550, and 40 to 90 volts per amp, respectively.