Devo 7E main PCB component ID help

looks like an FM02G (or FMO2G) transistor.

Based on this and looking at my Tx, it bridges the power jumper, and so is likely a power P-FET.
My Devo8 used a
IRLML6401 which is probably equivalent, since the power circuit on all Devo radios is basically the same.
You can use any PFET that can sink more than an amp and has low Rds. I used a generic to92 p-fet from radio shack when I blew that exact same tx on my devo8.
Just checked and looks like I used a BS250 which is in no way an appropriate replacement as it has terrible Rds and low power sink, but still it has been running fine for a couple years now. So find any old P-fet and stick it in there

BTW, the power circuit for the Devo8 is here:
www.deviationtx.com/downloads-new/catego...power-switch-circuit
The 7e wil be basically the same

Fyathyrio wrote: OK, if I've understood everything properly, these should work?

Yes, that should be fine. It is the lead-free version of what was in my Devo8. The voltage on a PFet is always negative, because it is measured from drain to source.. Make sure you do not use more than a 12V battery/charger though as I believe this transistor is before the LDO.

Also, if you are trying to find a SOT part to replace, make sure to check the pinout. They are not all the same. You want it as in the data-sheet for the IRLML6401 (gate top-left, drain center-right, source bottom left)

if you blew the power fet, the transmitter really shouldn't turn on at all (unless it blew in a shorted condition, which would be an odd way for a FET to fail). Are you sure this is the issue? You can apply a jumper across the FET (There are pins near by) which will result in it powering up when the battery is attached, and this is perfectly safe except that you need to manually save the changes before unplugging the battery (assuming you are running Deviation. I don't know how the stock firmware reacts to this)

yeah, doesn't look good. Anyhow, you won't damage anything by continuing to use it.

yes