If you’ve ever wondered how to control the headlight of a car from a microcontroller, a MOSFET is what you need. This is a very common MOSFET with very low on-resistance and a control voltage (aka gate voltage) that is compatible with any 3-5V microcontroller or mechanical switch. This allows you to control high-power devices with very low-power control mechanisms.
Note: We stock two different models of this component, the two are nearly identical and can be used interchangeably. We’ve provided links to both datasheets below. We are currently shipping the FQP30N06L.
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If you’re having problems at certain high speed switching using this MOSFET, try using a gate current limiting resistance of 100 ohms. This will decrease the time constant enough to keep up with the faster switching frequencies since the gate pin is basically a capacitor with a time constant “tau = r*c”.
This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.
Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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I first came across this little thing via the MOSFET power controller listed here: https://www.sparkfun.com/products/10256
and found loads of fun and practical uses for the device.
taking the basic practical application of the device I resurrected a vintage traffic signal light by first gutting it,and then modifying a traditional 555 based LED traffic light simulator, replacing the LEDs with these MOSFET’s and using them to drive a bank of 12v DC lamps to make the old traffic light work through its functions as an accent lamp. the chip are a great value at the price point, and I highly recommend them
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This works great, I’ve used it in various projects, to control bright LED lights and heating pads from a microcontroller, for example.
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I just can’t get enough of them!