choosing mosfets for less than 5 amps

Projects General Guidance
1

I'm going to buy some mosfets for simple experiments with the arduino - controlling lights, small motors etc.

There are plenty of suggestions -

N-Channel MOSFET 60V 30A - COM-10213 - SparkFun Electronics FQP30N06L or RFP30N06LE 60V 30A

Also IRLZ44NPBF 55V 40A

all in a TO220 case, at around $1

Has anyone found logic level MOSFETS that would take say around 30V and 5A in a smaller package?

2

PMV16XN - 20V, 6.8A.
IRLML2502TRPBF - 20V, 4.2A
Both work well with 3.3V logic, and come in SOT23 package (roughly the size of a grain of rice, so you may want to get some breakout boards for them as well - though then you bring them back to TO-220 size and shape).

3

I'm a fan of IPAK/TO-251. There are a few out there, the IRLU014 has an RDSon of 0.2 ohms with a gate voltage of 5V.

4

Not significantly smaller than TO220; and that's a pretty high on resistance for a modern day MOSFET (the PMV16XN is around 20 mOhm).

5

Thanks for your responses. I now realise I should have specified "with legs" ie not surface mount as I'd like to use them in a breadboard.

I have found some - like the ZVN4206A - but the rds(on) is much too high for them to be useful.

For anyone interested you can do a search on the mouser site for the parameters you need.

I'm coming to realise that there is no real point in looking for a smaller package, I'll just get some of the FQP30N06L.

Thanks for help.