2N3906
Encyclopedia
The 2N3906 is a common PNP bipolar junction transistor
used for general purpose low-power amplifying
or switching applications. Compared to the general run of silicon transistors, it is designed for low current
and power
and medium voltage
, and can operate at moderately high speeds. The type was registered by Motorola Semiconductor in the mid-sixties, together with the complementary NPN type 2N3904, and represented a significant performance/cost improvement, with the plastic TO-92 case replacing metal cans.
It is a 200-milliamp, 40-volt
, 300-milliwatt transistor with an Ft of 250 MHz, with a beta of at least 100.
Bipolar junction transistor
|- align = "center"| || PNP|- align = "center"| || NPNA bipolar transistor is a three-terminal electronic device constructed of doped semiconductor material and may be used in amplifying or switching applications. Bipolar transistors are so named because their operation involves both electrons...
used for general purpose low-power amplifying
Amplifier
Generally, an amplifier or simply amp, is a device for increasing the power of a signal.In popular use, the term usually describes an electronic amplifier, in which the input "signal" is usually a voltage or a current. In audio applications, amplifiers drive the loudspeakers used in PA systems to...
or switching applications. Compared to the general run of silicon transistors, it is designed for low current
Electric current
Electric current is a flow of electric charge through a medium.This charge is typically carried by moving electrons in a conductor such as wire...
and power
Electric power
Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt.-Circuits:Electric power, like mechanical power, is represented by the letter P in electrical equations...
and medium voltage
Voltage
Voltage, otherwise known as electrical potential difference or electric tension is the difference in electric potential between two points — or the difference in electric potential energy per unit charge between two points...
, and can operate at moderately high speeds. The type was registered by Motorola Semiconductor in the mid-sixties, together with the complementary NPN type 2N3904, and represented a significant performance/cost improvement, with the plastic TO-92 case replacing metal cans.
It is a 200-milliamp, 40-volt
Volt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
, 300-milliwatt transistor with an Ft of 250 MHz, with a beta of at least 100.