MMBT3904: Durable 40 V NPN Transistor, Compact SOT-23

The MMBT3904 offers reliable performance in a compact SOT-23-3 package. It’s an NPN bipolar transistor rated to handle 40 V collector-emitter breakdown and a 200 mA maximum collector current. With a transition frequency up to 300 MHz and a power dissipation of around 350 mW, it stands up well to high-frequency switching and signal amplification tasks. Mounting is surface-type, making integration easy on modern PCBs. Note that this part is marked obsolete, so check for available substitutes when planning long-term production. Ready to order the MMBT3904 for your build? Contact us today to secure stock and pricing.