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 – Alldatasheet

Also the higher frequency response has improved performance when used in audio amplifiers. The 2N remains very popular as a series pass transistor in linear power supplies and is still used k503 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 datashee was very practical. The KD have ,d503 power and higher current than 2N Modern 2N datasheets often, but not always, specify f T of 2.

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.

Post as a guest Name. It was produced exclusively by the Czechoslovakian electronics company Tesla. Build your own low-power transmitters: By using this site, you agree to the Terms of Use and Privacy Policy.

It was second sourced by other manufacturers; Texas Instruments listed a single-diffused mesa version of the device in an August datasheet. Modern successors to the 2N can be much more suitable in fast-switching circuits or high-end audio power amplifiers.


It often has a transition frequency of around 3.

(IC)KDKD 10pcs on | Alibaba Group

Philips ON Ask Question. It has a transition frequency of 2. Graf; William Sheets Commons category link from Wikidata.

KD are packaged in a TO-3 case style called T41 by Teslait is a 20 amp80 voltwatt power transistor. 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.

The 2Nwith a TO-3 case has slightly lower gain but significantly higher maximum ratings W, Vceo, 16 Amps. But there’s a date code on the part, so maybe it’s a newer type than the book.

Retrieved from ” https: This page was last edited on 22 Novemberat The total power dissipation written P D in most American datasheets, P tot in European ones depends on the heatsink to which the datwsheet is connected. John M 94 8.

The device is designed to operate with an efficient heatsink, but care must be taken to mount the device properly, [7] [8] [9] else physical damage or dataasheet power handling may result, especially with cases or heatsinks that are not perfectly flat.

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 frequency at which gain begins to drop off may be much lower, see below. Other manufacturers around this time also would specify similar values e. Nevertheless, a 2N and many other power transistors originating from this era cannot be assumed to have kd5033 high-frequency performance and there can be degradation of phase-shift and open-loop gain even within the audio frequency range.

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. Since the early s, the 2N transistor has been heavily targeted by counterfeiters, who substitute much smaller daatasheet dies with lesser power ratings, use inferior mounting techniques, and fake the markings. I had a look in a copy of Towers’ International Transistor Selector, and there’s no mention of it.


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. Email Required, but never shown.

KD503 Datasheet

With an “infinite” heatsink, that is: Possibly equivalent to the Delco DS? Retrieved 7 November 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. Home Questions Tags Users Unanswered. 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 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: 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.