So if the load is less then 600mA which is the maximum collector current of 2N2222 then you can easily use it instead of S8050 but if the load is higher than 600mA then you cannot use 2N2222 instead of S8050.Īgain in this case we will see the above ratings and characteristics chart now in this situation if the 2N2222 transistor is working as an amplifier then we can easily replace it with S8050 without any hassle. Another way to find out that is to check what type of component this transistor is driving whether it is a relay, LED or any other component and check its datasheet that how much current this component requires. You will also find many tutorials on YouTube on how to check amperes. This can be determined by using a digital mulitimeter on ampere settings and connected between the transistor and the load. But if you are replacing it in a switching circuit then we should find out that how much load or current S8050 is driving in that circuit. If you want replace it in an amplification circuit then there will not be an issue and you can replace them without any hassle. While the S8050 collector-emitter voltage is 25V, collector current is 1500mA, total device dissipation is 1000mW, DC current gain is 85 to 300 and transition frequency is 100MHz. As you can see in the ratings and characteristics chart above, the 2N2222 collector-emitter voltage is 40V, collector current is 600mA, total device dissipation is 625mW, DC current gain is 30 to 300 and transition frequency is 300MHz. To understand this first we have to check and compare their ratings and characteristics. Ratings & Characteristics Comparison : Ratings & Characteristics So you don’t have to change anything regarding to pins when replacing the in a circuit and you can put them in the place of each other. The first pin is “Emitter”, second is “Base” and the third is “Collector”. *Remarks: Brand New items comes in a zip pouch bag wrapped safely in bubble/Foam sheet.The pin configurations of both the transistors are identical. A simple circuit diagram of the Class B amplifier with the using the S8050 is shown below. Like here the NPN transistor will be S8050 and its equivalent PNP transistor will be S8550. By complimentary it means that we need a NPN transistor and its equivalent PNP transistor. It is very simple to construct and requires two identical complimentary transistors operate. So let us discuss how that is done.Ī push pull amplifier, commonly known as Class B amplifier is type of multistage amplifier commonly used for audio amplification of loudspeakers. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region.Īs mentioned in the features the S8050 transistor is commonly used in push pull configuration with Class B amplifier. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (VCE) or Collector-Base (VCB) could be 20V and 30V respectively. When this transistor is fully biased then it can allow a maximum of 700mA to flow across the collector and emitter. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA. The maximum amount of current that could flow through the Collector pin is 700mA, hence we cannot drive loads that consume more than 700mA using this transistor. However at a normal operating collector current the typical value of gain will be 110. Since it is very high it is normally used for amplification purposes. It has a maximum gain value of 400 this value determines the amplification capacity of the transistor normally S8050. S8050 is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. Note: Complete Technical Details can be found at the S8050 datasheet. High Used in push-pull configuration doe Class B amplifiers.Continuous Collector current (IC) is 700mA.Low Voltage, High Current NPN Transistor.
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