Q:What are the key specifications for 2N3904?
The 2N3904 is an NPN transistor with a collector‑emitter breakdown voltage of 40 V and a maximum power dissipation of 625 mW. It operates over a temperature range of –55 °C to 150 °C, has a transition frequency (f_T) of 300 MHz, and is supplied in a bulk 200‑pin package.