2N3904 TRANSISTOR

The 2N3904, a general-purpose NPN transistor in a TO-92 package and a workhorse of DIY stompbox circuits.

About this part

The 2N3904 is one of the most common small-signal NPN silicon transistors. You'll find it in boosters, buffers, fuzzes and switching circuits across countless DIY projects. It's inexpensive and easy to find, so it's worth keeping a few in your parts drawer for builds, experiments and repairs. Always check the pinout on your schematic or layout before soldering, since TO-92 pin order varies between transistor types.

Specs

• Type: NPN silicon
• Package: TO-92