New: AI Part GeneratorFree to get started
Diode & TransistorC814643D model included

MMBT3904LT1G

by onsemi(安森美)

MMBT3904LT1G is onsemi's surface-mount member of the familiar 3904 NPN transistor family. Common uses include small-signal amplification and switching stages, where the base controls current through the collector-emitter path. The SOT-23 implementation is represented here by a three-pin symbol and the three-pad SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR footprint. Both are supplied as downloadable KiCad files together with a 3D model, covering schematic representation, PCB placement and assembly visualization. This library conversion has seen use by 1 ProtoFlow engineer in a real design. Open the transistor directly in ProtoFlow to add it to an analog or switching circuit.

Download KiCad files

Use MMBT3904LT1G in your design

ProtoFlow is a free, AI-native EDA tool. Drop this part onto a schematic, route a PCB, and let the AI copilot help. The symbol, footprint, and 3D model come in linked and ready.

Free to start. macOS, Windows and Linux. No sign-up to try.