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The slightly lower of the two voltages will correspond to the collector-base junctionand the other will be the emitter-base junction. Spehro Pefhany k 4 By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I am trying to figure out what is daasheet on here. Home Questions Tags Users Unanswered. What do you think?

To confirm, you can double check with the hFE function if your meter has that. It can be even worse, since the On Semi PN has the conventional pinout, despite being the same daatsheet and mostly same specifications: This is the picture of the datasheet for the pins: Try not to touch the transistor while testing it dataseet temperature will change the voltage readings. Would you like to answer one of these unanswered questions instead?

You can have up to 3 types of configurations. 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 No other pin will show that.


Would I reuse it?

Absolute maximum rating datasbeet emitter-base voltage is 6V hence the E-B junction broke down and started conducting. I don’t think so – throw it in the bin.

Korea Electronics (KEC)

The situation worsen when all these china fake transistors crowded the whole market, there are no standardization at all. Javier Loureiro 1 7 This is true of almost all modern transistors a few are made more symmetrical.

This is the pic of the transistor, as I understand that it should work, but it doesn’t it is always ‘on’ with 12V between the collector and the emitter with the base floating.

Most 2Ns have the orientation which your diagram shows, where if the flat side is facing you, the pins are E-B-C respectively. You have to try each of the three pins to the two others, with both polarities 6 pairs of tests. 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 no voltage pulled down or floatingand the transistors gets pretty hot.

KN 데이터시트(PDF) – KEC(Korea Electronics)

Am I missing something here? Thank you for your interest in this question. The base will show a diode connection to both other pins, in only one polarity.


If I set up the datasheeet for a quick test, it seems that the datasheet or the transistor has the pins swapped. I have a simple circuit to send current to a brushless fan running at 12V on the high side, using a NPN transistor 2NA:.

Zuofu 3, 2 15 The hFE is usually much higher when properly connected than when collector and emitter are swapped.

KN Datasheet, Equivalent, Cross Reference Search. Transistor Catalog

It looks like a datasheeet. 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.

With it wired the wrong way round the emitter is more positive than the collector and the base is reverse biased. 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: Hence the 2N pin-out is sadly not standardized.