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View Full Version : Discussion Suggest a MOSFET for free flight timer

AleG
May 02, 2008, 04:00 AM
IŽm about to order a bag of assorted stuff from Mouser and I was wondering about throwing in some MOSFETS so I can build a few Free Flight timers. Problem is, IŽm a bit lost in the forest.

What I need is something that would work on one LiPo and a rating of about 1A maximum current or so. It also has to be small and light.

Anyone cares to give a suggestion?
Ivan2280
May 02, 2008, 07:29 AM
irlm2502tr
slipstick
May 02, 2008, 08:18 AM
Well the ones I use are called IRLML2502....but I guess that's more or less the same ;).

Steve
AleG
May 02, 2008, 09:59 AM
Oh yes, I looked for the irlm2502, but Mouser doesnŽt list it (or I couldnŽt find it)
Anyway, I gave up on ordering from them since I saw that the minimuy postage rate they have for international orders is 55 dollars. Thanks but no thanks.

I have to look for some supplier in South East Asia, there must be a big store in Hong Kong or Taiwan... :)
phil_g
May 02, 2008, 01:11 PM
The VN10 is a little TO92 1A n-channel mosfet, I use them often.
Cheers
Phil
Bruce Abbott
May 03, 2008, 05:37 AM
Oh yes, I looked for the irlm2502IRLML2502 is available from Farnell (http://th.farnell.com/9102981/semiconductors/product.us0?sku=INTERNATIONAL-RECTIFIER-IRLML2502PBF).
pldaniels
May 03, 2008, 06:02 AM
Are you after pin-through or SMD? For SMD there's the FDN337 which is a nice one (SOT23).
AleG
May 03, 2008, 07:11 AM
IRLML2502 is available from Farnell (http://th.farnell.com/9102981/semiconductors/product.us0?sku=INTERNATIONAL-RECTIFIER-IRLML2502PBF).


That looks about right.
IŽll be darned, that site shows up in Thai for me... I still havenŽt learn to read all that well; IŽll have to look for a way to change the language and check the postage costs.

pldaniels, yes, IŽm looking for small SMD stuff. I mean to use it in small Free Flight planes so IŽd like the timer to weight less than half a gram if possible.
pldaniels
May 03, 2008, 07:19 AM
AleG,

I keep stock of the FDV301, 303 and FDN337 for N-ch types, between those (in SOT23) I find that most of my signal and small power switching needs are handled.

The 337 is good for up to 2.2A at times, though i like to keep it under 1A to keep the temperature down.

Good luck with the timer :) (I just got back from the workshop where I've been soldering up a few hundred SMD parts for speed controllers :) )

Paul.
freeflightguy
May 04, 2008, 09:14 PM
Check out www.electricfreeflight.com,for free flight timers for micro,E-36 and F1Q planes.