NPN Silicon Epitaxial Planar Transistor for. Switching and Amplifier Applications. • RoHS compliance. Mechanical Data. Case: SOT, Plastic Package. The 2N is a common NPN bipolar junction transistor (BJT) used for general purpose depend on the manufacturer, case type, and variation. Therefore, it is important to refer to the datasheet for the exact part number and manufacturer. PNA. SMALL SIGNAL NPN TRANSISTOR. PRELIMINARY DATA s. SILICON EPITAXIAL PLANAR NPN. TRANSISTOR s. TO PACKAGE SUITABLE FOR.

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They’re listed together because they’re complementary transistors. This is the pic of the transistor, as I understand dataeheet it should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating. 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.

The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number. It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity. It is designed for low to medium currentlow powermedium voltageand can operate at moderately high speeds.

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. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:. The 2N is an NPN transistor that can only switch one-third the current of the 2N but has otherwise similar characteristics. Retrieved from ” https: JEDEC registered parameters include outline dimensions, small-signal current gaintransition frequencymaximum values for voltage withstand, current rating, power dissipation and temperature rating, and others, measured under standard test conditions.


Other part numbers will have different parameters. 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.

In actual circuit modifications might be required. Typical examples are the well known NPN and PNP industrial and military types, 2N and 2N, which have been used for over four decades and are still being used in many designs.

ST Microelectronics – datasheet pdf

Zuofu 3, 2 15 Single transistors are also available in several different surface mount packages, and a number of manufacturers market surface mount packages that incorporate several 2Ntype transistors in one package as an array of transistors. The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0.

I have used a base voltage of 5V and a value of 1K as current limiting resistor. Archived from the original on 14 April Views Read Edit View history. From Wikipedia, the free encyclopedia.

ST Microelectronics

Learn to keep an eye open for the following transistors, as they’re among the most useful, inexpensive, and popular types: By using this site, you agree to the Terms of Use and Privacy Policy. In other projects Wikimedia Commons. The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume dstasheet than mA using this transistor.

datassheet KSPA has a gain value of tothis value determines the amplification capacity of the transistor. Every transistor has a gain h FE associated with it, which can be used to tranwistor voltage or current.

When I apply a voltage between the pin 1 trandistor 3, as soon as the voltage rises over about 8V, the current starts to flow, even when the base has no voltage pulled down or floatingand the transistors gets pretty hot.


With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. How to use 2NA This transistor like all can be used either as a switch or as an amplifier. I am trying to figure out what is going on here.

To transistir, you can double check with the hFE function if your meter has that. Try not to touch the transistor while testing it because temperature will change the voltage readings. It is very similar to a mechanical switch but here we will control the switch using electric signals.

KSPA Transistor Pinout, Features, Equivalent & Datasheet

The capacitors C1 and C2 are simply used for filtering purpose. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region. One of the most default and primary function of a transistor is to act as a switch. Graf and William Sheets KSPA can allow collector tranistor upto mA and also has power dissipation of mW which can be used to drive larger loads than compared with BC Therefore, it is important to refer to the datasheet for the exact part number and manufacturer.

PN2222A Datasheet, Equivalent, Cross Reference Search

To distinguish collector from emitter, trqnsistor look at the voltage shown in the diode function with the one successful test that found the base. What do you think? Home Questions Tags Users Unanswered. Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting.