KD503 DATASHEET PDF

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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KD Datasheet PDF – Tesla

Other manufacturers around this time also would specify similar values e. JohnHonniball, thanks for looking. No transistors prefixed ‘ON’ at all.

The KD have higher power and higher current than 2N By using this site, you agree to the Terms of Use and Privacy Policy. An MJ PNPwhich is also manufactured using the epitaxial process today, is a complementary transistor to the 2N But there’s a date code on the part, so maybe it’s a newer type than the book. This page was last edited on 22 Novemberat It was produced exclusively by the Czechoslovakian electronics company Tesla. With an “infinite” heatsink, that is: 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.

In other projects Wikimedia Commons. Ah, so the F refers to the date? I guess the 31 is the 31st week of the year, then.

(IC)KD503:KD503 10pcs

I had a look in a copy of Towers’ International Transistor Selector, and there’s no mention of it. It has a transition frequency of 2. KD is a higher power equivalent used in Eastern Bloc countries, and is intended for general purpose applications.

Philips ON F It’s used to drive 4 injectors simultaneously, in this configuration: 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.

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RCA by had changed their specification to give 2.

Modern successors to the dqtasheet can be much more suitable in fast-switching circuits or high-end audio power amplifiers. 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. Sign up or log in Sign up using Google.

And here’s what the pins look from the other side they’re the long metal tabs that come from the case, around the middle of the picture:.

(PDF) KD503 Datasheet download

The team of design, production, and applications engineers received RCA Electronic Components achievement awards in The art of electronics 2nd ed. Build your own low-power transmitters: 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. It was introduced in the early s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mids.

Views Read Edit View history. 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.

Retrieved 7 November I’m trying to find information on a power transistor used on a automotive ECU. From Wikipedia, the free encyclopedia.

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, V CERand the Collector-Emitter Sustaining voltage, V CEO susis given by ON Semiconductor. By using our site, you acknowledge that you datsheet read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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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.

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 frequency at which gain begins to drop off may be much lower, see below.

Possibly equivalent to the Delco DS? Sometimes the V CBO breakdown voltage the maximum voltage between collector and base, with eatasheet emitter open, an unrealistic arrangement in practical circuits is given as the only voltage rating, which can cause confusion. Having reverse-engineered the circuit, I’m fairly certain that it’s a NPN transistor, but I’ve found some references mentioning a Darlington transistor was used on the ECU.

The 2N ks503 a silicon NPN power transistor intended for general purpose applications. Graf; William Sheets Retrieved 31 October Home Questions Tags Users Unanswered. Sign up using Email and Password. Nevertheless, a 2N and many other power transistors originating from this era cannot be assumed to have great high-frequency performance and there daasheet be degradation of dqtasheet and open-loop gain even within the audio frequency range.

It was second sourced by other manufacturers; Texas Instruments listed a single-diffused mesa version of the device in an August datasheet.