2N3904
Representative 2N3904 image (package may vary by manufacturer)
Overview
This device is designed as a general-purpose amplifier and switch. The useful dynamic range extends to 100 mA as a switch and to 100 MHz as an amplifier. 2N3904 EBC TO-92 MMBT3904 C SOT-23 Mark:1A E B PZT3904 C SOT-223 E C B.