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The exact performance characteristics depend on the manufacturer and date; before the move dataeheet the epitaxial base version in the mids the f T could be as low as 0. Although the original 2N went into decline relative to epitaxial-base transistors because of high manufacturing costs, the epitaxial-base version continued to be used in both linear amplifiers and switching supplies.
RCA by had changed their specification to give 2.
N-Channel Dual Silicon Junction Field-Effect Transistor
Retrieved 7 November The KD have higher power and higher datasheer than 2N Graf; William Sheets The art of electronics 2nd ed. An MJ PNPwhich is also manufactured using the epitaxial process today, is a complementary transistor to the 2N Other manufacturers around this time also would specify similar values e. KD are packaged in a TO-3 case style called T41 by Teslait is a 20 amp80 voltwatt power transistor.
With changes to semiconductor manufacturing technology, the original process became economically uncompetitive in the mids, and a similar device was created using epitaxial base technology.
2N MOSFET Datasheet pdf – Equivalent. Cross Reference Search
The 2N is a much lower power version of the 2N, rated at 25 W55 V and 4 Abut became almost obsolete about the late s when many TO devices were withdrawn from mainstream manufacturers’s lists. The 2Nwith a TO-3 case has slightly lower gain but significantly higher maximum ratings W, Vceo, 16 Amps.
Retrieved 31 October It has a transition frequency of 2. The device is designed to operate with an efficient heatsink, but care must be taken to mount the device properly,    else physical damage or worsened power handling may result, especially with cases or heatsinks that are not perfectly flat. Datashset 2N remains very popular as a series pass transistor in linear power supplies and is still used in for medium- current and high- power circuits generally, including low frequency datashewt converters although its use in audio power amplifiers and DC-to-AC inverters is now less common and its use in higher frequency switch-mode applications never was very practical.
Retrieved from ” https: This page was last edited on 22 Novemberat It was 22n3955 sourced by other manufacturers; Texas Instruments listed a single-diffused mesa version of the device in an August datasheet. Since the early s, the 2N transistor has been heavily targeted by counterfeiters, who substitute much smaller silicon dies with lesser power ratings, use inferior mounting techniques, and fake the markings.
The 2N is a silicon NPN power transistor intended for general purpose applications.
The historically-significant 2N was designed by Herb Meisel’s engineering group with RCA; it was the first dattasheet silicon power transistor to sell for less than one dollar, and became an industry workhorse standard. Sometimes the V CBO breakdown voltage the maximum voltage between collector and base, with the emitter open, an unrealistic arrangement in practical circuits is given as the only voltage rating, which can cause confusion.
With an “infinite” heatsink, that is: Views Read Edit View history. In other projects Wikimedia Commons. It often has a transition frequency of around 3. In the sixties and early seventies, Philips produced similar devices encapsulated in TO-3 packages under the reference BDY20 described as being for “hifi” purposes and BDY38 although the BDY38 has lower voltage ratings than the 2N The team of design, production, and applications engineers received RCA Electronic Components achievement awards in Variants with higher voltage ratings e.
Wikimedia Commons has media related to 2N The frequency at which gain begins to drop off may be much lower, see below. It was introduced in the early s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mids.
Modern successors to the 2N can be much more suitable in fast-switching circuits or high-end audio power amplifiers. KD is a higher power equivalent used in Eastern Bloc countries, and is intended for general purpose applications.
From Wikipedia, the free encyclopedia. Commons category link from Wikidata. It is by now unlikely to actually obtain a genuine 2N transistor when using popular sales platforms such as Amazon or Ebay; classic electronics distributors are mostly still able to properly source them. Build your own low-power transmitters: 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.
The total power dissipation written P D in most American datasheets, P tot in European ones depends on the heatsink to which the 2N is connected.