What is C945 transistor?

C945 transistors are always classified under general-purpose NPN transistors that are used in a wide range of applications. They are also classified under the Bipolar Junction Transistor (BJT) family of transistors because they use both electrons are holes as charge carriers.

C945 transistors are quite popular in the world of electronics This is mainly because they are easily available and are also affordable. Furthermore, they can still do the job regardless of the nature of their application areas.

In case you are planning to buy C945 transistors, this is the right article for you. We are going to discuss everything that you should know about this transistor. You will also get some tips for buying the best C945 transistors for your application.

Key features of C945 transistor

Some of the notable features of the C945 transistor that you should know include:

· It has three terminals: the base, the collector, and the emitter. Each terminal has a specific role that it plays in the working of a transistor.

· C945 is an NPN transistor. This means that it features a negative-positive-negative configuration

· Designed for two major functions, switching and amplification of the electric signals

· Has a high current gain, a key feature that makes it suitable for the amplification function

· Has low voltage. With a voltage rating of 50V C945 is classified as a low-voltage transistor

· Has low power dissipation which is rated around 400mW

· It has a low operating frequency, making it suitable for applications that have low-frequency

Technical specifications

Before you decide to buy a C945 transistor, it is important to confirm its technical specifications so that you know whether it is suitable for your electronic application. Ke technical specifications that you should know:

· Collector-emitter saturation voltage: between 0.2-0.4 volts

· Emitter-base breakdown voltage ranges between 5V and 10 V

· Collector-emitter breakdown voltage ranges between 50V and 100 V

· The collector current of between 0.1 A and 0.2 A

· Power dissipation (PD) is 400 mW

· Power dissipation at the collector ranges between 600 mW to 800 mW

· Operating temperature range of between -55°C to 150 °C

· Transition frequency: 150 MHz

· Package Type: TO-92

C945 transistor pinout

C945 transistor has three major pins or terminals, the base, the emitter, and the collector. They provide a pathway for the flow of charge carriers on a transistor. These are the terminals that connect the transistor to the rest of the circuit.

Collector: This is the terminal that is used for supplying power to the transistor. Usually, it is connected to the positive terminal of the supply voltage.

Base: The main function of the base terminal is to control the flow of current between the collector and the emitter terminals. You will connect the input signal to this terminal.

Emitter: This is the output terminal of the transistor. Signals flow from the transistor through this terminal.

Applications of C945 transistor

· Given its features and specifications, C945 transistors are used in the following application areas:

· Low current switches

· Used in H-bridge circuits that are used for running low-power motors

· In audio frequency amplifiers

· Oscillator circuits

· Switching low electronic signals

· Switching in logic circuits

From this list, you can tell that all these applications are based on two major functions: switching and amplification.

FAQ

What is the symbol of the C945 transistor?

Image source EasyBom

The symbol of this transistor is a circle with three terminals of a typical transistor inside. The terminals of the transistor are labeled E, B, and C which stand for the emitter, base, and collector.

How do I use the C945 transistor?

As we have already methionine, C945 transistors are mainly used for the amplification and switching functionalities.

They do so when they are fully embedded into electric circuits. To use this transistor, you simply need to connect it directly to an electric circuit using its three terminals which are the base, the collector, and the emitter.

The only challenge is you should be able to identify all the terminals of the C945 transistor that you want to connect to the circuit.

How do I test the C945 transistor?

Before you even decide to use your C945 transistor, it is important to test it to ensure that it is in perfect working condition.

There are different testing techniques that you can use to verify the state of your transistor. The most common method entails using a multimeter. It will help you find out the resistance between all the terminals of a transistor. 

Alternatively, you can use a transistor tester. This is a specialized testing equipment that you can use to find out various properties and parameters of a transistor.

Can I buy C945 transistors in bulk?

If you are handling large electronic projects, it is always advisable to buy transistors in bulk. You will be able to purchase several transistors that will meet your project needs. Also, buying transistors wholesale will allow you to buy these components at the best prices. This is an ideal option for buyers looking for affordable transistors.

Where can I buy a C945 transistor?

When it comes to buying transistors, there are many different places that you can explore. You can even buy from an electronics shop near you. However, in case you want to buy transistors in bulk, you should buy from reliable suppliers. Other than quantity, you can also be sure of getting high-quality C945 transistors.

Are C945 transistors expensive?

No, these transistors are widely available and hence are affordable. You can easily buy C945 transistors online at an affordable price. However, take note that where you buy these transistors will determine the price that you will pay. It is always advisable to buy from reputable suppliers for the best prices.

Conclusion

I hope that with this guide, you have learned all the essentials about C945 transistors. Given their massive popularity in the world of electronics, there is a high chance that you are likely to utilize this transistor in your application.

When it comes to buying C945 transistors, ensure that you choose the best suppliers. This is where ICRFQ comes in. We are a reliable C945 transistor supplier in China. We have been in this industry for the past 20 years and have proven to be the best in the industry. Contact us directly in case you would like to buy C945 transistors in China.