where can find datasheet of transistor to check

the transistor is npn or pnp

 

Google?

 

the transistor is a three terminal device <Base ,emitter,collector>
either NPN or PNP the middle letter indicates the base

for Example if the transistor say 2N3904 it's NPN

 

if u 're looking for any data sheet for any Electronic device
try this web suit

www.alldatasheet.com

 

You have your ad in the Datasheets website thread. If you continue to spam the forums with links to your site, I will remove all links and block all future links to the said site. You have been warned -- Dave

 

The very best places to find the data sheet are at the manufacturer's site or a distributor's site.

Here is a good starting point:

Transistor Manufacturers & Suppliers

At this site, you can search for the specific transistor by searching for it's part number.

John

 

Try this.... www.datasheetarchive.com

 

There is an ongoing list for datasheet websites being compiled here.

Dave