Mosfet for wearable

Hi All,
I am thinking of using Lily Pad for making my own heated clothing but they don't have mosfet board to manage high current needed for the heating element. I also checked Adafruit but could not seem to find such board. Anyone can give me direction? The board needs to be as small as possible and can be washed since this is for wearable.

Perhaps provide some details of the heater you are trying to control ?

What for instance is a 'high' current ?

2-3 amps

You can try AO3400 mosfet

My question is regarding breakout board for wearable NOT the mosfet itself

Please help us understand. What makes something "wearable"?

It is described on a 1st post :
"The board needs to be as small as possible and can be washed"

When circuit boards are manufactured, they all receive a wash to remove all solder particles, flux, fingerprints and dirt. So there must be more to it that that. Wires and connectors cannot be washed. Explain.

Wash : How to Wash Your Clothes: 12 Steps (with Pictures) - wikiHow

Here's to get an idea:

Sorry, no mention in the FLORA link that the device is washable. Please understand that when a circuit board is washed, it MUST be blown dry with compressed air so ALL the water and any other material is removed from all the SMT devices on the board. No exceptions! Water and electronics breed corrosion.

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LoL

Do you now see the difference between a "wearable" device and a "washable" device?

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I can make the breakout board washable if it does match the other requirements.
So do you have the recommendation or just want to keep nitpicking?

Be sure to patent your process as no one else has done that before.

Electrically heated clothing is an especially bad idea since for a fraction of the effort you can make garments that are as warm as necessary for any climate that don’t have to be recharged after a few hours using a continuous filament insulation like Climashield.

All sorts of other applications of electricity and clothing are practical and fun though. Experts in the wearable electronics community normally provide connectors for the parts of a system that would be inadvisable to throw in the washer and just detach the circuits.

I you insist on electrically warming a garment as a gag then simply remove the electronics before washing. I get a big smile on my face when I imagine something with dozens of those 10cm x 5cm heating patches sewn in and the belt-mount power pack necessary to provide power for more than a few minutes.

No. Just for personal use.

If you can make any board "washable", I don't understand why do you need a board itself. Take the mosfet, that I recommended you in post#4 and make such a board which you want.

I can only see the board being 'washable' if it, and all the connectors, are made completly waterproof.

Is that the plan ?

Yes if no board comes waterproofed from manufacturer

Can you give a link and example to ANY board that comes from a manufacturer that states their board is waterproof?