The SMMBT3904LT1G is an NPN (Negative-Positive-Negative) Bipolar Junction Transistor (BJT) manufactured by ON Semiconductor. Here are the key specifications and details about this component:
The MMBT3904-7-F is an NPN bipolar junction transistor (BJT) manufactured by Diodes Incorporated. Here is a detailed introduction to the MMBT3904-7-F transistor: