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Home > Motor Control > C945 Transistor Pinout, Features, Equivalent, and Datasheet

C945 Transistor Pinout, Features, Equivalent, and Datasheet

Update Time: 2022-12-09 16:53:29

C945 is a type of electronic component known as a transistor. A transistor is a semiconductor device that can be used to amplify or switch electronic signals. 


The C945 is a specific type of NPN transistor, meaning it is a bipolar junction transistor (BJT) with negative-positive-negative charge carriers. This type of transistor is commonly used in various electronic circuits and devices.


C945 Pinout

The pinout for a C945 transistor is the arrangement of its terminals or pins, which are used to connect the transistor to other electronic components in a circuit. The pinout for a C945 transistor is as follows:

C945 Pinout.png
C945 Pinout

Pin 1: Emitter

Pin 2: Base

Pin 3: Collector


This is the standard pinout for a C945 transistor. The collector, base, and emitter terminals connect the transistor to other components in the circuit, and they must be connected properly for the transistor to function correctly. In some cases, the transistor may also have a fourth pin used for heat dissipation or other purposes.


It is important to consult the datasheet for a specific C945 transistor to verify its pinout and ensure it is connected properly in a circuit.


C945 Features

As a specific type of transistor, the C945 has certain characteristics and features that make it suitable for certain applications. Some of the key features of the C945 include:

  • It is an NPN transistor, which has negative-positive-negative charge carriers.

  • It has three terminals: the collector, the base, and the emitter.

  • It is commonly used for amplifying or switching electronic signals.

  • It has a low collector-emitter saturation voltage, making it suitable for switching applications.

  • It has a high current gain, making it suitable for amplifying applications.

  • It is commonly used in various electronic circuits and devices, including radio frequency (RF) amplifiers, audio amplifiers, and switching circuits.


These are just some of the key features of the C945 transistor. It is important to note that the specific characteristics and performance of a C945 transistor can vary depending on the manufacturer and the specific application in which it is used.


Specifications

The specific specifications of a C945 transistor can vary depending on the manufacturer and the specific application in which it is used. However, some common specifications for a C945 transistor include:

  • Collector-emitter saturation voltage: Typically between 0.2 V and 0.4 V

  • Collector-emitter breakdown voltage: Typically between 50 V and 100 V

  • Emitter-base breakdown voltage: Typically between 5 V and 10 V

  • Collector current: Typically between 0.1 A and 0.2 A

  • Collector power dissipation: Typically between 600 mW and 800 mW

  • Operating temperature range: Typically between -55°C and 150°C


C945 Application

Some common applications for the C945 transistor include:

  • Amplifying electronic signals: The C945 transistor has a high current gain, making it suitable for amplifying electronic signals. This can include audio signals in audio amplifiers and RF signals in RF amplifiers.

  • Switching electronic signals: The C945 transistor has a low collector-emitter saturation voltage, making it suitable for switching applications. This can include switching circuits that control the flow of electricity in a circuit.

  • Controlling motors and other loads: The C945 transistor can control the flow of electricity to motors and other loads, such as lights or appliances. This can allow for precise control of the speed or operation of the load.

  • Other applications: The C945 transistor can be used in a wide range of other applications, including radio frequency (RF) circuits, logic circuits, and other types of electronic circuits.


These are just some examples of common applications for the C945 transistor. The specific application in which a C945 transistor is used will depend on the specific needs of the circuit or device in which it is being used.


C945 Equivalent

Some possible equivalents for the C945 transistor include the following:

2N3904: This is a commonly used NPN transistor with similar characteristics to the C945 and can be used in many applications.

BC547: This is another commonly used NPN transistor with similar characteristics to the C945 and can be used as an equivalent in some applications.

2N2222: This NPN transistor has similar characteristics to the C945 and can be used as an equivalent in some applications.

Some examples of transistors may be used as equivalents to the C945 in certain applications. It is important to carefully consider the application's specific requirements and consult the datasheets for the transistors to ensure that they are suitable replacements. In some cases, it may be necessary to use the C945 specifically rather than a substitute.


C945 Package

A C945 transistor is commonly packaged in a small, rectangular package known as the TO-92 package. The TO-92 package is widely used for small electronic components, including transistors, diodes, and other semiconductor devices. The TO-92 package has three leads or pins, which are used to connect the transistor to other components in a circuit. 


The leads are arranged in a triangular pattern, with the collector lead at the top, the emitter at the bottom, and the base lead in the middle.


C945 Dimensions

The dimensions of a C945 transistor can vary depending on the manufacturer and the specific package in which it is packaged. However, a common package for the C945 transistor is the TO-92 package, which has the following dimensions:

C945 Dimensions.jpg

C945 Pinout

Length: 3.9 mm

Width: 3.9 mm

Height: 6.5 mm


These are the dimensions of the TO-92 package, a common package for the C945 transistor. The dimensions of the transistor itself will be slightly smaller than the dimensions of the package, as the package also includes leads or pins for connecting the transistor to other components in a circuit. It is important to consult the datasheet for a specific C945 transistor to verify its dimensions and ensure that it will fit properly in the circuit in which it will be used.


Frequently Asked Questions

If you have any other questions about the C945 transistor, please let me know, and I will do my best to help. Some other possible questions about the C945 transistor include:


  • What is the symbol for a C945 transistor? 

The symbol for a C945 transistor is a triangle with a circle inside, with the emitter, base, and collector terminals labeled E, B, and C, respectively.


  • How do you use a C945 transistor? 

The C945 transistor is commonly used in electronic circuits to amplify or switch electronic signals. It is connected to other components in the circuit using its three terminals (collector, base, and emitter), and the base terminal can control the flow of current through the transistor.


  • How do you test a C945 transistor? 

There are several ways to test a C945 transistor to determine if it is functioning properly. One common method is to use a multimeter to measure the resistance between the collector and emitter terminals with the base terminal open and then with the base terminal connected to the emitter terminal. Another method is to use a transistor tester, a specialized device that can test the characteristics of a transistor.


  • Where can you buy a C945 transistor? 

C945 transistors can be purchased from Jotrin Electronics. They are also commonly available from local electronics stores or hobby shops. It is important to verify the specifications and performance characteristics of the C945 transistor before purchasing it to ensure that it is suitable for the intended application.


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