Recommended MosFet for 5v mods

[Pendarus]

From my readings here and on other forums, MosFets seem to be the most reliable way to switch an atomizer.

What are the recommended part numbers for this application?

 

[caesar]

IRF8736 work great although a bit more pricey.

Gate is fully on over 2.35V, mosfet is good for 14Amps.

 

[Pendarus]

IRF8736 work great although a bit more pricey.

Gate is fully on over 2.35V, mosfet is good for 14Amps.

Thanks! Looks good from the datasheet.

 

[Applejackson]

I got the NTB18N06LT4GOSCT-ND

MOSFET N-CH 60V 15A D2PAK


As recommended by Cisco.

For the resistor between gate and source, I got

CF1/410KJRCT-ND
RES 10K OHM 1/4W 5% CARBON FILM


Both are from Digikey.

 

[gmojo]

Good timing, my shop was just talking about Mosfets yesterday.

Has anybody here been able to recieve samples of these from a manufacturer?

 

[Applejackson]

Good timing, my shop was just talking about Mosfets yesterday.

Has anybody here been able to recieve samples of these from a manufacturer?

I paid for mine, but they're super cheap. I got 5 of them for $7.70... $1.54 each.

 

[cybervex]

The IRF8736 works great

 

[vendo]

Will any of the sample mosfets on TI.com work. I don't mind paying if I have to but £12 delivery for 5 x mosfets @ £0.87 is a bit steep

 

[mnealtx]

I've used the TI CSD16325 MOSFETs. They're damned small and a bit of a pain to solder to, but they *do* work.

 

[boondongle]

Don't laser pointers have a tactile switch and mosfet on a PCB? Shouldn't you just be able to pick up a laser pointer at the dollar store and use that? I'm not telling, I'm asking. Seems like a good way to get it all in a nice small package for almost nothing.

 

[vendo]

I've used the TI CSD16325 MOSFETs. They're damned small and a bit of a pain to solder to, but they *do* work.

Thanks for that Mike. Do I require any other components other than a tactile switch for these (resistors, capacitors etc)

 

[mnealtx]

You need to reference the gate to ground so that it doesn't float. A 10k or so resistor should work fine.

 

[Applejackson]

Don't laser pointers have a tactile switch and mosfet on a PCB? Shouldn't you just be able to pick up a laser pointer at the dollar store and use that? I'm not telling, I'm asking. Seems like a good way to get it all in a nice small package for almost nothing.

Theoretically, yeah. You can also take the mosfet and switch on a PCB board out of an old manual battery (though it's hard as hell). The only thing for me is, I don't know what those are rated at, and if either of them can handle 5 or 6v (I don't know a ton about this, so someone else could chime in here). Certainly if you had a laser pointer that ran on CR2s it would work. They're out there, but expensive, and usually illegal to sell in the US because they're >5mW lasers (Usually like 200mW-500mW).

Like this seems like it would be really easy to mod for 6v vaping, but I can't buy it since I'm in the US. focusable 100mw high power red laser pointer 2*cr2

I'm particularly curious as to how the FDA gets to regulate laser pointers. Are they classified as a food, or a drug?

 

[gmojo]

Thanks for the tips on the resistor and the TI samples. I have to include these in my next mod.

 

[Ez Duzit]

Anyone have a schematic of the circuit using a mosfet with a micro switch for the ecig?

 

[mnealtx]

File:Mosfet n-ch circuit.png - Wikipedia, the free encyclopedia

 

[vendo]

You need to reference the gate to ground so that it doesn't float. A 10k or so resistor should work fine.

Thanks again Mike
Just got the TI sample ones.
I can hardly see them let alone solder them up
Well I got 5 so I'll have a few solderballs when I'm finished

 

[UberSquid]

Isn't their a holder for these? I would think there should be a socket or something to plug them into.

 

[Ez Duzit]

No need to use a mosfet anymore if you want a micro switch in a 5v box.
Found a much easier way without having to use a regulator, along with a separate mosfet. MadVapes has a 5v regulator with a control pin that is absolutely freaking perfect. Great specs for ecig use. I'm vaping on one I built the other day using two 10440's and the above mentioned regulator with a 50ma tact switch. I get about 5 hours of rock steady 5v vaping on a full charge.

Look at the 6th picture in the description for the circuit schematic.

MadVapes LLC