The UMT3904 is a general-purpose NPN bipolar junction transistor (BJT) manufactured by Rohm Semiconductor. It is designed for amplification and switching applications. Housed in an ultra-small mold (UMT3) package, this transistor is suitable for portable and space-sensitive devices.

Applications:

• Low-noise amplifiers
• Switching circuits
• Driver stages
• Oscillators
• Portable electronics

Features:

• NPN BJT
• Low saturation voltage
• High current gain (hFE)
• Ultra-small mold (UMT3) package
• High collector current capability

Benefits:

• Efficient amplification and switching
• Minimal voltage drop in saturation, improving efficiency
• High gain for sensitive applications
• Space-saving design
• Versatile for a broad range of applications

Additional Details:

The UMT3904 has a collector-emitter voltage (VCEO) of 40V, a collector-base voltage (VCBO) of 60V, and an emitter-base voltage (VEBO) of 6V. The continuous collector current (IC) is 200mA. The typical current gain (hFE) ranges from 100 to 300 at a collector current of 10mA. The transition frequency (fT) is typically 300MHz. The UMT3 package dimensions are approximately 1.2mm x 0.9mm x 0.5mm. This transistor's characteristics make it a reliable choice for both linear and switching applications within its specified ratings.