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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2NA Pinout, Features, Equivalent & Datasheet

The 2N is considered a very common transistor, [1] [2] [3] and is used as an exemplar of an NPN transistor. The JEDEC registration of a device number ensures particular rated values will be met by all parts offered under that number.

Archived from the original on 14 April 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. Complete Technical Details can be found at the 2NA datasheet given at the end of this page.

From Wikipedia, the free encyclopedia. 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.

I am trying to figure out what is going on here.

ST Microelectronics – datasheet pdf

Commercial transistors Bipolar transistors. Build your own low-power transmitters: When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV. Graf and William Sheets To bias a transistor we have to supply current to base pin, this current I B should be limited to 5mA.


You can have up to 3 types of configurations. Home Questions Tags Users Unanswered.

ST Microelectronics

The capacitors C1 and C2 are simply used for filtering purpose. If it is to replace a shorted transistor, we will never know if both are the same ebc configuration between your new 2N and the old 2N Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting.

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: Hence the 2N pin-out is sadly not standardized. The Base-Emitter voltage of this transistor is 6V so you just have to supply this voltage across the base and emitter of the transistor to induce a base current into the transistor. Javier Loureiro 1 7 How to use 2NA This transistor like all can be used either as a switch or as an amplifier.

Every transistor has a gain h FE associated with it, which daasheet be used to amplify voltage or current. This datashset like all can be used either as a switch or as an amplifier.

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. Transistor as Amplifier Another Common application of a Transistor is as amplifiers.

It is frequently used as a small-signal transistor, [4] [5] and it remains a small general purpose transistor [6] of enduring popularity.

Submitted by webmaster on 11 December The hFE is usually much higher when properly connected than when collector and emitter are swapped. Retrieved 26 March The value for this resistor can be calculated using the formula. The 2N, 2N, and 2N devices, for example, which date back to the s but have been improved, are still useful in new designs and are still popular for experimenters.


One of the most default and primary function of a transistor is to act as a switch. The vales of the Resistor in the above image are only for reference and are not accurate.

All variations have a beta or current gain h fe of at least in optimal conditions. Would you like to answer one of these unanswered questions instead?

KSPA has a gain value of tothis value determines the amplification capacity of the transistor. Spehro Pefhany k 4 Replacements for the 2N are commonly available now in the cheaper TO packaging, where it is known as the PN or P2N, which has similar specifications except for the lower maximum collector current.

To make things simple I have shown a simplified circuit to make a transistor as switch. In other projects Wikimedia Commons. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.

Datadheet general specifications of the various variants are similar, with the biggest difference being the maximum allowable current and power dissipation.

TL — Programmable Reference Voltage. This is the pic of the transistor, as I understand that it transistlr work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating. Use dmy dates from July Commons category link is on Wikidata. The transistor will begin to conduct when the voltage across the Base and Emitter pin exceeds 0. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests.

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