MOSFETs are the modern go-to technology for controlling large loads from a microcontroller. As technology has advanced, and processor voltages have moved to 3.3v and below, MOSFETs have become available which will turn on with ever lower gate voltages. Unfortunately for many hobbyists, these modern low-voltage MOSFETs have often remained out of reach - while 4.5v logic level MOSFETs were made in through-hole packages, the lower voltage ones are available almost exclusively in surface mount packages. eBay and Amazon are full of 4-channel MOSFET driver boards... unfortunately these almost exclusively use old "standard" voltage MOSFETs. It's never been clear to me why this was the case - but that's why I decided to offer this board.

This is a basic 4-channel MOSFET breakout board, made with the AOD476 2.5v logic level gate MOSFET. These support switching loads up to 20V and are rated for continuous current of 20A @ 100C Tc (case temperature), 25A @ 25C. See documentation link for full datasheet.

Sold as an ASSEMBLED BOARD - with or without screw terminals.

Features

• Rated for Vgs +/- 8V, Vds up to 20V, and continuous current of 20-25A depending on temperature.
• Rated for use with Vgs as low as 2.5v
• Includes 10k pulldown resistors on the gates
• Includes optional series resistors, which is recommended out of concern for the current spike associated with the gate charge, but which may or may not be necessary or appropriate for all applications.
• Use screw terminals, other header with pins on 0.2" header, or solder wires directly to the board.
• Optional screw terminals are the good kind (the green ones, not the slightly cheaper blue ones that don't grip the wire).

Need beefier fets? Check out the larger version

Looking for something smaller? Check out these SOT-23 MOSFETs on breakout boards, as low as $0.50 each!