FET for ESC

[Funfly3]

I have a blown ESC using a pair of Fets I have removed the blown one and it
now functions the fet marked up as a MK3L 9123 but I am unable to find a
supplier using Google anybody know a equivalent? UK would be nice
Kevin
--
--
Reply Address does work ??

[Nigel Heather]

Look at this thread

http://www.rcuniverse.com/forum/m_1474134/anchors_1625109/mpage_1/key_/anchor/tm.htm#1625109

Say that the International Rectifier parts

IRF7401 and IRF7821 are good alternatives.

Says you can get them at Farnell www.cpc.co.uk but I can't see them.

You could also try RS www.rswww.co.uk

Check the International Recitifier site www.irf.com to make sure that these
above at least look similar to the component on your board.

In the meantime, I see if I can track down where to buy them from.

Cheers,

Nigel


"Funfly3" <dontemailme@ntlworld.com> wrote in message
news:MI%ee.8538$996.2908@newsfe6-gui.ntli.net...
>I have a blown ESC using a pair of Fets I have removed the blown one and it
>now functions the fet marked up as a MK3L 9123 but I am unable to find a
>supplier using Google anybody know a equivalent? UK would be nice
> Kevin
> --
> --
> Reply Address does work ??
>

[Nigel Heather]

Just checked RS - they sell them. £2.69 + VAT and postage.

Where abouts in the country are you? If you are unsure about soldering I
would be happy to help out. I'm in Horsham, West Sussex.

Cheers,

Nigel

[Chris Dugan]

Kevin,
try these:

IRF7401 and IRF7821 from RS, Farnell or Digikey in the UK mail order
beware they have minimum order quantities. They were mentioned in the
thread:

Re: Pictures of the Walkera No.35 RC Helicopter

Be aware that when the FET blew it may have allowed some power back into the
control circuitry and have damaged that as well as the FET. So just changing
the FET may not restore correct operation.

RS at http://rswww.com
Farnell at http://uk.farnell.com
Digikey at http://dkc1.digikey.com/uk/digihome.html

Chris

[Nigel Heather]

Chris,

That's interesting about Farnell - is the every day guy in the street
allowed to order from them or is it just companies.

I thought that CPC were Farnell's public point of sale.

But if you can order from Farnell as a memebr of public it is very good
because they stock them (unlike CPC).

Cheers,

Nigel

[hall woo]

$2.03 at digikey used in single fet brushed ESC for speed 300

[Funfly3]

"Chris Dugan" <chrisdotdugan@bloodyobvious.co.uk> wrote in message
news:al2fe.24204$vU4.23850@newsfe6-win.ntli.net...
> Kevin,
> try these:
>
> IRF7401 and IRF7821 from RS, Farnell or Digikey in the UK mail order
> beware they have minimum order quantities. They were mentioned in the
> thread:
>
> Re: Pictures of the Walkera No.35 RC Helicopter
>
> Be aware that when the FET blew it may have allowed some power back into
> the
> control circuitry and have damaged that as well as the FET. So just
> changing
> the FET may not restore correct operation.
>
> RS at http://rswww.com
> Farnell at http://uk.farnell.com
> Digikey at http://dkc1.digikey.com/uk/digihome.html
>
> Chris
>
It has pair of fets in parallel I have remove the blown one and it now works
after borrowing one of the tail pair so I am going to put a new pair in the
main motor and replace the tail one
Kevin

[Nigel Heather]

First the good news ....

The part is only 50p at digikey.

Now the bad ....

But add handling charge of £10
Add shipping charge of £12
TOTAL = £22.50 or $42.53

I really don't think digikey is in the running .... stick with Farnell or
RS.

Cheers,

Nigel

[Chris Dugan]

"Nigel Heather" <No-Spam@No-Spam.com> wrote in message
news:J6WdnRsHYrzEJeHfRVnygQ@pipex.net...
> Chris,
>
> That's interesting about Farnell - is the every day guy in the street
> allowed to order from them or is it just companies.
>
> I thought that CPC were Farnell's public point of sale.
>
> But if you can order from Farnell as a memebr of public it is very good
> because they stock them (unlike CPC).
>
> Cheers,
>
> Nigel
>

Yep, I've ordered direct from Farnell in the last year. I needed some
surface mount resistors to repair some recievers that had the chip broken
off the board (it was right up against the side of the case so when I
repaired the units I moved it away from the edge to give it some protection.

Chris