2N5089 Transistor : Pinout, Equivalent and Datasheet

2N5089 is an NPN Silicon-based Amplifier Transistor. It operates as a switch in saturation mode to drive and control load under 100mA.  and as an amplifier in the active region. 

Other general categories of transistors do amplification of noise signal but 2N5089 not do amplification of noise. It has a Collector-Emitter Voltage of 25 Vdc with a Collector-Base voltage of 30 Vdc. 

The 2N5089 could provide 50mAdc of collector current continuously. It is widely used in audio equipment for amplification and other purposes. 

This transistor comes with three terminals named: emitter, base, and collector.

2N5089 Pin Description

Footprint

3D Model

■Type: NPN

■Package Type: TO-92

■Collector to Emitter Voltage (VCEO)= 25 Vdc

■Collector to Base Voltage (VCBO) = 30 Vdc

■Emitter to Base Voltage (VEBO)= 3.0 Vdc

■Collector Current (IC)= 50 mAdc

■DC Current Gain (VCE=5.0 Volts,IC=100 uA) : 400-1200

■Current-gain-bandwidth Product = 50 Mhz (IC = 500 Adc, VCE = 5.0 Vdc, f = 20 MHz)

■Small−Signal Current Gain(VCE=5.0 Volts,IC=1.0 mA,f=1.0 kHz) = 450(min), 1800(max)

■Power Dissipation (PD) : 625 mW  at TA=250C

■Max Storage & Operating temperature Should Be: -55 to +150 Centigrade

ON Semiconductor 2N5089G technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor 2N5089G.

2N5089 can be used for audio amplification purposes where there is a need to amplify a very low gain signal to high gain with noise cutoff. Other than that it can also be used to amplify any kind of low gain signals. Moreover, it can also be used as a switch in electronic circuits to drive loads under 100mA.

As a switch

Following is a proteus simulation of 2N5089 to control an LED. The two different circuits represent the working of the circuit when the base voltage is the same as the emitter and when the base voltage is greater than the emitter voltage.

In the first circuit, the collector is provided with a Vcc of 12 volts. The base is connected to a logic toggle. The led is placed at the emitter terminal following 220 ohms of a resistor to limit the excess forward current to avoid led damage. When the logic is turned on, the forward current flows and the led glows. On the contrary, when the logic is turned off, when voltage is not given to the base terminal, the base potential is the same as the emitter potential, so the led loses its luminosity, as shown by the second circuit.

As an amplifier

Above is the circuitry of 2N5089 as an amplifier. For the amplification of the signal, a common emitter configuration is used. This configuration has a high gain. The base terminal is applied with an input signal, and the collector is provided with some volts to turn on the active mode and operate the transistor as an amplifier. An audio signal is an AC signal. Coupling capacitors are used to avoid the distortion of the signals, which affects the audio quality by displaying high input impedance to low-frequency components.

A capacitor is also placed in series with the output to block the unnecessary DC components at the load/output. RC resistor controls the flow of collector current to control the gain of the amplifier. It is responsible for the frequency response of the circuitry as well. As a result, a small weak radio signal after passing through an NPN amplifier transistor is received as an inverted, amplified radio signal with a high voltage and power gain with fine quality and finds its applications in low noise, audio amplification systems.

-Used as a switch

-Used in modulation and amplification of signals

-Used in low noise amplification systems

-Used in high AF systems

-Used in push-pull circuits

-Used in sensor circuits

-Used in radio circuits

-Used in audio recorders

-Used in voice recorders

-Used in audio preamplifiers

-Used in audio amplifiers

-Used in audio amplifier stages

-Used in RF circuits under 50MHz

-Used in switching loads under 100mA

-Used in Hi-Fi audio system.

-Used in tone control circuits.

ON Semiconductor is a semiconductor supplier company. Products include power and signal management, logic, discrete and custom devices for automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace, and power applications. ON Semiconductor operates a network of manufacturing facilities, sales offices, and design centers in North America, Europe, and the Asia Pacific.