BS170 Logic Level N-Channel Mosfet

The BS170 is a handy N-channel MOSFET capable of continuously driving up to 500mA.

This type of MOSFET is often referred to as a logic level FET since it has a very low gate threshold voltage of around 2.1V. This makes it great for use with digital circuits and signals from devices such as Arduino and even Raspberry Pi.

The BS170 works well as a gate driver for larger MOSFETs that require a higher gate threshold voltage but that you want to control with a smaller voltage such as 5V or 3.3V.

Specifications

• Max Drain-Source Voltage (VDSS): 60 V
  
• Max Gate-Source Voltage (VGSS): ± 20 V
  
• Drain Current (ID):
  
  • Max Continuous-Drain Current: 500 mA
    
  • Max Pulsed-Drain Current: 1200 mA
    
• Gate Threshold Voltage (VGS(th)): 2.1V
  
• Drain-Source Breakdown Voltage (BVDSS): 60V
  
• Drain-Source On-Resistance (RDS(ON)): 1.2 Ω
  
• MOSFET Polarity: N-Channel
  
• Maximum Operating Temperature (TJ): +150°C
  
• Power Dissipation (Pd): 830 mW
  
• Package: TO-92-3
  
• Brand: Fairchild Semiconductor
  
• Channel Mode: Enhancement
  
• Dimensions:
  
  • Length: 4.5mm (0.18")
    
  • Width: 3.5mm (0.14")
    
  • Height: 4.6mm (0.18")
    
  • Pin Length: 14.5mm (0.57")

Resources

• BS170 Datasheet

Pinout