2N3906,Who can explain ...

[nokia6230i]

04-29-2011, 12:20 PM post 396 and 04-29-2013, 1137 PM post 679 look and explain 2N3906 E, B, C. ...?

[WM6]

If you are looking for replacement' simply rotate bc557 by 180 degree.

[Carl-NC]

What's your question?

[nokia6230i]

my question is the same as another configuration transistor legs, E, B, C, C, B, E

[Qiaozhi]

Transistor pinouts can vary for different manufacturers, and TO-92 components are particularly bad in this respect. The only way to be certain is to put them in a transistor tester before soldering onto the PCB.

[kt315]

standart conf-n for 2N3906 is EBC, as common used. another one seems either as un-standart or a mistake in this data sheet.

[technos]

To the unspoken question that needs an answer, the fact is that you are looking at the difference between American and British transistors. When transistors were first made, they came in dozens of oddball cases. Manufacturers started to develop products around them and then became dependent on a certain pinout for standard commonly used transistors. So American technology evolved in a different way than other countries.

I welcome other's information on this.

[kt315]

he gave the data sheet in German and this his german source is wrong. I use simple hand-made haracteriograph at o-scope and find out the pins, see a structure, either it be mos-fet or any silicon.

[Carl-NC]

It could be that someone makes the 3906 with the CBE pinout instead of EBC. Generally, it won't hurt a bipolar to plug it in backwards, it just won't work very well (beta will be about 2). Follow the data sheet, then if that doesn't work, turn it around.