![]() If you are designing a PCB or Perf board with this component then the following picture from the S8550 Datasheet will be useful to know its package type and dimensions. SS9013 Transistor Explained / Description: SS9013 is a BJT NPN transistor manufactured in TO-92 package. A simple circuit diagram of the Class B amplifier with the using the S8050 is shown below. Alternative transistors for SS9013 are S9013, S8050, 2N2222, BC337, BC338, output pins of some equivalents are different please see pinout details of the transistor you are willing to replace. 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 S8550 transistor is commonly used in push pull configuration with Class B amplifier. It has a maximum gain value of 400 this value determines the amplification capacity of the transistor normally S8050. 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. S8050 is an NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at the ground and will be closed (Forward biased) when a signal is provided to the base pin. When this transistor is fully biased then it can allow a maximum of 700mA to flow across the collector and emitter. The emitter is highly doped, the base is lightly doped, and the collector is moderately doped. ![]() Since it is very high it is normally used for amplification purposes. The S8050 triode mainly includes three terminals, namely the emitter, base, and collector, which are used for external connection with electronic circuits, and the three terminals are different in doping concentration. It has a maximum gain value of 300 this value determines the amplification capacity of the transistor normally S8550. S8550 is a PNP 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 S8550 transistor datasheet given at the end of this article. The S8050 transistor’s first pin is Emitter second is Base and third is Collector and the BC547 transistor’s first pin is Collector, second is Base and third is Emitter. Commonly used as Class B Push-pull transistors When looking at the pin comparison chart of these transistors we can see that both have different pinouts. S8050 NPN Transistor: Application, Feature, Pinout.Collector-Emitter voltage (VCEO) is -25 V.Continuous Collector current (IC) is 500mA.Low Voltage, High Current PNP Transistor.Current Drains out through emitter, normally connected to groundĬontrols the biasing of transistor, Used to turn ON or OFF the transistorĬurrent flows in through collector, normally connected to load
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