KN Description = General Purpose Transistor ;; Package = TO Details, datasheet, quote on part number: KN KN datasheet, KN circuit, KN data sheet: KEC – EPITAXIAL PLANAR NPN TRANSISTOR,alldatasheet, datasheet, Datasheet search site for . KN Datasheet, KN PDF, KN Data sheet, KN manual, KN pdf, KN, datenblatt, Electronics KN, alldatasheet, free, datasheet.

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KN2222 Datasheet, Equivalent, Cross Reference Search

This is the pic of the transistor, as I understand that it should work, but it doesn’t it is always ‘on’ with 12V datashwet the collector and the emitter with the base floating. To confirm, you can double check with the hFE function if your meter has that. I don’t think so – throw it in the bin.

The slightly lower of the two voltages will correspond to the collector-base junctionand the other will be the emitter-base junction. The situation worsen when all these china fake transistors crowded on2222 whole market, there are no standardization at all. To distinguish collector from emitter, you look at the voltage shown in the diode function with the one successful test that found the base.

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Javier Loureiro 1 7 Home Questions Tags Users Unanswered.


KN Datasheet(PDF) – KEC(Korea Electronics)

I am trying to figure out what is going on here. You can have up to 3 types of configurations.

This is the picture of the datasheet for the pins: The base will show a diode connection to both other pins, in only one polarity. Zuofu 3, 2 15 daatsheet No other pin will show that. It looks like a “diode”.

datsheet What do you think? Hence the 2N pin-out is sadly not standardized. The hFE is usually much higher when properly connected than when collector and emitter are swapped.

Korea Electronics (KEC)

Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C respectively. Absolute maximum rating for emitter-base voltage is 6V hence the E-B junction broke down and started conducting.

It can be even worse, since the On Semi PN has the conventional pinout, despite being the same manufacturer and mostly same specifications: Spehro Pefhany k 4 Am I missing ,n2222 here?


Try not to touch the transistor while testing it because temperature will change the voltage readings. With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. If I set up the circuit for a quick test, it seems that the datasheet or the transistor has the pins swapped. Would I reuse it?

I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:. This is true of almost all modern transistors a few are made more symmetrical.

When I apply a voltage between the pin 1 to 3, as soon as the voltage rises over about 8V, the current starts to flow, even when the base has dstasheet voltage pulled down or floatingdatxsheet the transistors gets pretty hot. Thank you for your interest in this question. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. If it is to replace a shorted transistor, we will never know if both are the same ebc configuration between your new 2N and the old 2N