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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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The base pin of the transistor datashfet to be biased with a voltage; this voltage is provided by the potential divider network formed by the resistors R4 and R6. 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. To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA.

Submitted by admin on 24 June Normally this type of transistor datahseet either be used as a switch or as an amplifier, both of which is discussed below. It is very similar to a mechanical switch but here we will control the switch using electric signals.

KSPA Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

Another Common application of a Transistor is as amplifiers. One of the most default and primary function of a transistor is to act as a switch. 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 KSPA is a NPN transistor hence the collector and emitter will jsp 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.


The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0.

KSPA Datasheet(PDF) – Fairchild Semiconductor

When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. The resistor R2 is used to limit the current though the collector of the transistor and is not mandatory. The vales of the Resistor in the above image are only for reference and are not accurate. In this type of circuit, the Emitter and the Base pin of the transistor should be commonly connected to a same voltage, so we have connected it to the Ground potential using two resistors R4 and R3.

TL — Programmable Reference Voltage.

However 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 amplification as its sole purpose.

But there are two important features that distinguish both.

Again the values of the resistor mentioned above are only for reference commonly used you have to design your own circuit based on the application and transistor you are using. Every transistor has a gain h FE associated with it, which can be used to amplify voltage or current. The capacitors C1 and C2 are simply used for filtering purpose.


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.

KSP2222A Datasheet

There are many types datasheft amplifier circuits that are possible with transistor but this is the most commonly used one because it is very good in amplifying low frequency voltage signals like fatasheet signals. Transistor as Amplifier Another Common application of a Transistor is as amplifiers. 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.

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 has datasneet gain value of tothis value determines the amplification capacity of the transistor.