The DTD143TK is a digital transistor (BJT) manufactured by Rohm Semiconductor. It's a pre-biased transistor incorporating bias resistors internally, which simplifies circuit design and minimizes external components. This transistor is designed for switching applications where a digital signal directly controls a load.

Applications

• Digital switching circuits
• Inverter circuits
• Microcontroller load driving
• General purpose amplification and switching

Features

• Integrated bias resistors (R1=4.7kΩ, R2=10kΩ)
• Reduces external component count
• Simplifies circuit design
• Small SOT-346 package
• NPN transistor

Benefits

• Saves PCB space
• Reduces assembly costs
• Reduces design time
• Improves circuit reliability

Additional Details

The DTD143TK has a collector-emitter voltage (Vceo) of 50V and a collector current (Ic) of 500mA. The total power dissipation is rated at 300mW. The input resistor (R1) is 4.7kΩ and R2 is 10kΩ. This transistor is well-suited for medium-current switching applications, particularly in space-sensitive environments.