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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JEDEC registered parameters include trandistor dimensions, small-signal current gaintransition frequencymaximum values for voltage withstand, current rating, power dissipation and temperature rating, and others, measured under standard test conditions. 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.

To make things simple I have shown a simplified circuit to make a transistor as switch.

To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA. It is very similar to a mechanical switch but here we will control the switch using electric signals.

When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter. Build your own low-power transmitters: Hence the 2N pin-out is sadly not standardized. However one important thing to notice is the Base resistor a.

ST Microelectronics – datasheet pdf

KSPA has a gain value of tothis value determines the amplification capacity of the transistor. Complete Technical Details can be found at the 2NA datasheet given at the end of this page. It is used in a variety of analog amplification and switching applications. TL — Programmable Reference Voltage. It looks like a “diode”. Since its initial product launch by Motorola at the IRE Convention, the 2N has become the most widely 2222s and universally recognized transistor of all time.

Single transistors are also available in several different surface datashwet packages, and a number of manufacturers market surface mount transitor that incorporate several 2Ntype transistors in one package as an array of transistors. As the name suggests this resistor will limit the current flowing through the transistor to prevent it from damaging. When I apply a voltage between the pin 1 to 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. Applications Can be used to transistog high current upto mA loads It can also be used in the various switching applications.

Submitted by admin on 24 June The capacitors C1 and C2 are simply used for filtering purpose. The base pin of transisttor transistor has to be biased with a voltage; this voltage is provided by daatasheet potential divider network formed by the resistors R4 and R6. Submitted by webmaster on 11 December High frequency and microwave engineering. I have used a base voltage of 5V and a value of 1K as current limiting resistor.

The 2N exhibits its forward gain beta peak at a lower current than the 2N, and is useful in amplifier applications with reduced I ce.

Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C respectively. 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. The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0.

KSPA Transistor Pinout, Features, Equivalent & Datasheet

Other part numbers will have different parameters. When base current is removed the transistor becomes fully off, this stage dattasheet called as the Cut-off Region and the Base Emitter voltage could be around mV. 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. It is designed for low to medium currentlow powermedium voltageand can operate at moderately high speeds.

The general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation. Graf and William Sheets This is the picture of the datasheet for the pins: If I set up the circuit for a quick test, it seems trnsistor the datasheet or the transistor has the pins swapped.


The datashete specifications depend on the manufacturer, case type, and variation. But there are two important features that distinguish both.

What do you think?

ST Microelectronics

TL — Programmable Reference Voltage. KSPA can allow collector current upto datahseet and also has power dissipation of mW which can be used to drive larger loads than compared with BC I am trying to figure out what is going on here. Wikimedia Commons has media related to 2N Replacements for the 2N are commonly available now in the cheaper TO packaging, where it is known as the PN or Datashewt, which has similar specifications except for the lower maximum collector current.

Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting.

Would you like to answer one of these unanswered questions instead? 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 value for this resistor can be calculated using the formula. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.

It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: The base will show a diode connection datassheet both other pins, in only one polarity.

Am I missing something here? The slightly lower of the two voltages will correspond to the collector-base junctionand the other will be the emitter-base junction. This page was last edited on 25 Octoberat Billions of units have been manufactured over the past 45 years and there is continuing high volume annual production.

Author: admin