Last Updated on October 22, 2023 by Kevin Chen
Image source: Amazon
When it comes to the medium power transistors, there are numerous options that you can explore. One of them is the D882 transistor, which is categorized under the NPN transistor type.
Famously known for its performance and reliability, this is a key component that you should consider buying if your application is neither low nor high voltage. It is used in both individual projects and as well as commercial applications.
So, what is all the fuss about D882 transistor? Should I buy it? And if I buy what should I know?
In this guide, we are going to explore everything you should know about the D882 transistors.
I will also give you guide on where to use the D882 and how to choose reliable D882 transistor suppliers in China.
D882 transistor overview
D882 is a general-purpose transistor that has wide range of applications in the modern world. Since it is not a specifically designed for a certain purpose, it give inventors and technicians maximum flexibility such that they can use it in different electric projects and products.
The transistor features a collector current of 3A and can easily drive the loads rated below 3 amperes.
Since it is an NPN transistor, it features three pins which one is the positively doped layer that is sandwiched between two layers of the negatively charged materials.
Application of current at the base of the transistor terminal forces the electrons to flow from the emitter to the collector.
The voltage between the emitter and the collector of this transistor is 30V while that between the collector and base is 40V. At the same time, D882 is designed to be biased by 5V.
Later on in this guide you will learn why these figures matter.
D882 transistor working principle
So, how does a D882 transistor work?
To understand the working principle of a D882 transistor, you only need to know the basics of an NPN transistor: How it operates.
The whole activity starts at the base terminal which is designed to operates as the controller of the whole transistor set up. After all, it is at this terminal that the voltage is applied.
Also the base terminal is responsible for controlling how the electrons flow from the emitter to the base and from the base to the collector pin. To make this possible, a resistor is used to control the amount of current that flows.
So, where is the base terminal in the D882 transistor? Since this is an NPN transistor, the base is represented by the P layer. The other two are the collector and emitter terminals and both are negatively-doped.
At the heart of the D882 transistor is the base-emitter junction. As we have said, the base will always be the input while the other two terminals be the outputs.
When a bias voltage of 5 volts is applied at the base terminal, it cause current to flow from the emitter to the collector. This small current is then amplified hence large amount of current will flow from the collector to the emitter. Keep in mind that it is this amplified current that will play a pivotal role in powering other devices.
As a controller the base will determining the direction of the current flow. It does this using the bias voltage which can be forward-biased or reverse-biased. This simply means that if a positive voltage is applied, the current will flow from the collector to the emitter. Negative voltage will cause the current to flow in the opposite direction (emitter to collector).
It is this working principle that makes this transistor suitable for a wide range of applications.
Applications of the D882 transistors
Here are some of the areas in which D882 transistors are heavily used.
-Used as amplifiers: As we have seen from the working principle, these transistors can raise the amount of current passing through a circuit from low to high.
-Oscillators: D882 transistors are also used to generate signals that have specific frequency range.
-Switches: The transistors are used in automated systems to turn circuits on and off
-Level shifting: Level shifting works when you want to change the level of the voltage signals, from high to low and vice versa.
-Used to drive motors. D882 transistors are incorporated in motor circuits where they are used for controlling speed and even the direction of the motors.
In general, as long as your load is below 3A and you need any of the above listed functionalities, D882 transistors will deliver.
D882 technical specifications
Here are the key technical specs of the D882 transistors. They influence the overall performance and functionalities of these transistors.
Transistor type: NPN
Collector-Emitter Voltage (VCE): 30V
Collector-Base Voltage (VCB): 40 V
Maximum Emiiter-Base Voltage (VEBO): 5V
Maximum Collector Dissipation (Pc): 10 watts
Maximum Transition Frequency (fT): 90 MHz
Operating and storage temperature (max and min) -55ºC – +150ºC
How to use D882 transistor?
Let’s say you have bought a D882 transistor. How do you incorporate it into the circuit?
Here are the steps to follow:
The first step entails connecting the transistor to the supply voltage. Since this is an NPN transistor, you will connect the collector C terminal to the positive terminal of the transistor, the emitter E to the negative terminal and the Base B to the control source.
The next step is to know the amount of current needed. As we had already stated in the specs, D882 works with 3A.
The last step is all about connecting the control signal of the transistor.
D882 transistor alternatives
Some of the ideal alternatives to the D882 transistor include the following:
So, in case you don’t find the D882, you can choose any of the above transistors. But before doing so, ensure that they are fully compatible with your applications.
Buying D882 transistors
Whether you are buying D882 transistors for sale or for your project, ensure that they are of high quality.
The transistor should meet the minimum standards and requirements for your application.
If you are buying the D882 transistors in China, consider using a reputable sourcing agent such as ICRFQ. We will verify all the details of the transistor directly from the manufacturer before delivering.
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