KSP. A. NPN Epitaxial Silicon Transistor. Absolute Maximum Ratings Ta=25 °C unless otherwise . This datasheet contains the design specifications for. KSPA transistor is a general purpose transistor and hence fit into many applications, it is a direct substitute for 2NA transistor as both. KSPA Transistor Datasheet pdf, KSPA Equivalent. Parameters and Characteristics.

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KSPA has a gain value of tothis value determines the amplification capacity of the transistor. Transistor as Amplifier Another Common application of a Transistor is daatasheet amplifiers.

But there are two important features that distinguish both. Normally this type of transistor will either be used as a switch or as an amplifier, both of which is discussed below.

KSP2222A Datasheet

Every transistor has a gain h FE associated with it, which can be used to amplify voltage or current. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.

Submitted by admin on 24 June TL — Programmable Reference Voltage. The base pin of the transistor has to be biased with a voltage; this voltage is provided by the potential divider network formed by the resistors R4 and R6. The capacitors C1 and C2 are simply used for filtering purpose.

There are 222a types of amplifier circuits that are possible with transistor but this is the most commonly used one osp it is very good in amplifying low frequency voltage signals like audio signals. To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. Another Common application of a Transistor is as amplifiers. KSPA 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.


In this type of circuit, dwtasheet Emitter and the Base pin of the transistor should datasueet commonly connected to a same voltage, so we have connected it to the Ground potential using two resistors R4 and R3.

One of the most default and primary function of a transistor is to act as a switch. So if you looking for an NPN transistor that could switch loads of higher current then KSPA might the right choice for your project. KSPA can allow collector current upto mA and also has power dissipation of mW which can be used to drive larger loads than compared with BC The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0.

KSPA Datasheet(PDF) – Fairchild Semiconductor

The resistor R2 is used to limit the current though the collector of the transistor and is not mandatory. The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor. 222a this type of amplifiers have many drawback and if you are looking for some serious amplification applications then you should look into Op-Amps which are nothing but a package of many transistors put to gather with 22222a as its sole purpose.


Again the values of the resistor mentioned above are only for reference commonly used you have datasbeet design your own circuit based on the application and transistor you are using. It is very similar to a mechanical switch but here we will control the switch using electric signals.

The resistor R1 is called the Base resistor and is very important to drive a transistor, it limits the base current and failing to use one might damage the transistor permanently. Applications General purpose NPN transistor Can be used to switch high current upto mA loads It can also be used in the various switching applications. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region.

The vales of the Resistor in the above image are only for reference and are not accurate.