CMPT3904-TR NPN Transistor for Everyday Signal Tasks

CMPT3904-TR is a general-purpose NPN transistor for switching, amplification, and signal interface work in compact electronic designs. It support 40V collector-emitter voltage, 200mA collector current, 350mW power dissipation, and a SOT-23 package, which makes it a practical fit for control boards, driver stages, and everyday small-signal tasks. CMPT3904-TR helps designers keep layouts compact while using a familiar transistor type that is easy to place and service. It works well in logic-level switching, low-power amplification, and simple interface circuits where predictable performance matters more than added complexity. For new builds and repair work alike, this part covers common NPN needs in a footprint that suits dense assemblies. It is especially handy where compact board area and standard transistor behavior both matter. Request a quote for CMPT3904-TR.