The MOSFET Plug is a small board containing two high-power MOSFETs for switching DC loads.

The IRLZ34N’s used here should be able to drive over 5A @ 50V, but this will require a heatsink. For use without heatsink, a maximum currrent of up to 3 amps should work fine. Just keep in mind that MOSFETs can generate a few watts of heat when used continuously at 2A or more. You can tie the MOSFETs in parallel for larger currents.

The terminal blocks used on this plug are heavy duty and detachable and use a standard 0.2" grid (5.08 mm). The two outputs have separate connectors.

The pins are laid out as two pairs: one side must be tied to ground, the other side (+A or +D) is then tied to the load, which in turn gets connected to a positive supply voltage (3..50V). Note that the positive supply voltage used by the load is not connected to the plug.

This plug ties the plug and the load grounds together - it is not isolated from the load power supply.


There is nothing to configure.

Header Pinouts

Design Info

Dimensions: 21.1 x 34.0 mm
CadSoft EAGLE design files: see below.
This plug can be operated at 5V as well as 3.3V.

This board uses the conventions of a JeePlug and can be used with the ports on a JeeNode. It can also be used with other boards and MCU’s, if you hook it up properly and adapt the interface code for it.

How to Get It

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