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It has a transition frequency of 2. Xatasheet manufacturers around this time also would specify similar values e. The device is designed to operate ratasheet 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. 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.
An MJ PNPwhich is also manufactured using the epitaxial process today, is a complementary transistor to the 2N The frequency at which gain begins to drop off 2n395 be much lower, see below.
The 2N remains very popular as adtasheet series pass transistor in linear power supplies and is still used in for medium- current and high- power circuits generally, including low frequency power 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.
In other projects Wikimedia Commons. Nevertheless, a 2N and many other power transistors originating from this era cannot be assumed to have great high-frequency performance and there can be degradation of phase-shift and open-loop gain even within the audio frequency range.
With an “infinite” heatsink, that is: The art of electronics 2nd ed. KD is a higher power equivalent used in Eastern Bloc countries, and is intended for general purpose applications.
TRANSISTOR 2n datasheet & applicatoin notes – Datasheet Archive
In the sixties and early seventies, Philips produced similar devices encapsulated in TO-3 packages ratasheet the dstasheet BDY20 described as being for “hifi” purposes and BDY38 although the BDY38 has lower voltage ratings than the 2N KD are packaged in a TO-3 case style called T41 by Teslait is a 20 amp80 voltwatt power transistor. The 2Nwith a TO-3 case has slightly lower gain but significantly higher maximum ratings W, Vceo, 16 Amps.
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power version of the 2N, rated at 25 W55 V and 4 Abut became almost obsolete about the late s when many TO devices were withdrawn from mainstream manufacturers’s lists. Datahseet Read Edit View history.
2N3955 PDF Datasheet浏览和下载
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. The KD have higher power and higher current than 2N Retrieved from ” https: It was produced exclusively by the Czechoslovakian electronics company Tesla.
RCA by had changed their specification to give 2. 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. Modern successors to the datqsheet can be much more suitable in fast-switching circuits or high-end audio power amplifiers.
This page was last edited on 22 Novemberat Graf; William Sheets It was second sourced by other manufacturers; Texas Instruments listed a single-diffused mesa version of the device in an August datasheet.
2N Price & Stock | DigiPart
The robot builder’s bonanza 2nd ed. The team of design, production, and applications engineers received RCA Electronic Components achievement awards in It was introduced in the early s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mids. Modern 2N datasheets often, but not always, specify f T of 2. Wikimedia Commons has media related to 2N It often has a transition frequency of around 3.
Retrieved 31 October 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.