Tesla KD datasheet, AF Power Transistor NPN (1-page), KD datasheet, KD pdf, KD datasheet pdf, KD pinouts. KD Datasheet, KD PDF, AF Power Transistor NPN. Characteristics of the KD bipolar transistor. Type – n-p-n; Collector-Emitter Voltage: 80 V; Collector-Base Voltage: 80 V; Emitter-Base Voltage: 5 V; Collector .

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The team of design, production, and applications engineers received RCA Electronic Components achievement awards in Philips ON Ask Question.

Also the higher frequency response has improved performance when used in audio amplifiers. John M 94 8.

KD Datasheet PDF –

Home Questions Tags Users Unanswered. It was introduced in the early s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in datasjeet mids. Sign up or log in Sign up using Google.

By using this site, you agree to the Terms of Use and Privacy Policy. Commons category link from Wikidata. Build your own low-power transmitters: With an “infinite” heatsink, that is: It was second sourced by other manufacturers; Texas Instruments listed a single-diffused mesa kd053 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 robot builder’s bonanza 2nd ed. Retrieved 7 November This page was last edited on 22 Novemberat Would someone have information on the device’s characteristics, or a pointer to the datasheet?

I had a look in a copy of Towers’ International Transistor Selector, and there’s no mention of it. With changes to semiconductor manufacturing technology, the original process became economically datasheef in the mids, and a similar device was created using epitaxial base technology.


Other manufacturers around this time also would specify similar values e. The maximum collector-to-emitter voltage for the 2N, like other dafasheet, depends on the resistance path the external circuit provides between the base and emitter of the transistor; with ohms a 70 volt breakdown rating, V CERand the Collector-Emitter Sustaining voltage, V CEO susis given by ON Semiconductor.

KD503 Datasheet PDF

Modern 2N datasheets often, but not always, specify f T of 2. The 2Nwith a TO-3 case has slightly lower gain but significantly higher maximum ratings W, Vceo, 16 Amps.

Sign up using Facebook. It often has a transition frequency of around 3. I’m trying to find information on a power transistor used on a automotive ECU.

The markings on the case are: 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. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

The historically-significant 2N was designed by Herb Meisel’s engineering group with RCA; it was the first multi-amp silicon power transistor to sell for less than one dollar, and became an industry workhorse standard. The KD have higher power and higher current than 2N Views Read Edit View history. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


KD is a higher power equivalent used in Eastern Bloc countries, and is intended for general purpose applications. 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.

RCA by had changed their specification to give 2. The art of electronics 2nd ed. Retrieved from ” https: Variants with higher voltage ratings e.

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. I guess the 31 is the 31st week of the year, then. 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.

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 2N can be much more suitable in fast-switching circuits or high-end audio power amplifiers.

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