It often has a transition frequency of around 3. The frequency at which gain begins to drop off may be much lower, see below. Maximum Ratings[ edit ] The maximum collector-to-emitter voltage for the 2N, like other transistors, depends on the resistance path the external circuit provides between the base and emitter of the transistor; with ohms a 70 volt breakdown rating, VCER, and the Collector-Emitter Sustaining voltage, VCEO sus , is given by ON Semiconductor. Sometimes the VCBO 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. The total power dissipation written PD in most American datasheets, Ptot in European ones depends on the heatsink to which the 2N is connected.
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Shajinn 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. 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.
The exact performance characteristics depend on the manufacturer and date; before the move to the epitaxial base version in the mids the f T could be as low as 0. Ah, so the F refers to the date? Commons category link from Wikidata. Home Questions Tags Users Unanswered. It was produced exclusively by the Czechoslovakian electronics company Tesla. Also datasjeet higher frequency response has improved performance when used in audio amplifiers. Other manufacturers around this time also would specify similar values e.
Modern successors to the 2N can be much more suitable in fast-switching circuits or high-end audio power amplifiers. From Wikipedia, the free encyclopedia. I guess the 31 is the 31st week of the year, then. Variants with higher voltage ratings e. In other projects Wikimedia Commons. The 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 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.
Retrieved 31 October The art of electronics ddatasheet ed. Modern 2N datasheets often, but not always, specify f T of 2. The 2N, 2N, and 2N devices, for example, which date back to the s but have been improved, are datashewt useful in new designs and are still popular for experimenters.
Post as a guest Name. Graf; William Sheets John M 94 8. Email Required, but never shown. It was introduced in the early s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mids. Sign up using Facebook. 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.
RCA by had changed their specification to give 2. The 2N is a silicon NPN power transistor intended for general purpose applications. 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.
It often has a transition frequency of around 3. Related Posts
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Gubei From Wikipedia, the free encyclopedia. I guess the 31 is the 31st week of the year, then. Sign up using Facebook. Commons category link from Wikidata. In other projects Wikimedia Commons. KD Datasheet, Equivalent, Cross Reference Search 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. Datwsheet markings on the case are: Wikimedia Commons has media related to 2N It often has a transition frequency of around 3.
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