NGD8205N replacement? What to look for comparing IGBTs?

[AmmoJammo]

I have somehow ended up with an aftermarket car ECU that requires repairs.

Both ignition coil drivers have gone bad, and by bad, I mean they are burnt holes in the board while desoldering themselves.

As a result, there really aren't any pads to fit a replacement SMD device, so I'm looking to go TO220, and mount them to the case.

But, I'm rather lost when it comes to finding a suitable part, the datasheet for the current part is here:
http://www.mouser.com/ds/2/308/ngd8205n-d-304413.pdf

Any advise would be fantastic! Thanks.

[danadak]

An excellent resource is usually the vendor website for tech help, especially
things like substitutions. You need to supply application, environment,
and help usually forthcoming. Schematic quite helpful.

That being said a circuit design for safe area, drive, and thermal considerations
is not like picking toothpicks out of a box for gum jam relief.

I would focus on gate C, Max rated breakdown voltages, operating current
and saturation voltage, speed.


Regards, Dana.

[Zero999]

How do you know it's only the IGBTs which have gone bad? If they've failed that catastrophically, it's likely they've taken down other components with them.

[AmmoJammo]

I don't have a schematic, and its pretty difficult to follow traces on the board, which I suspect the manufacturer intentionally did.

I don't know that its just the IGBT's, but I don't have an easy way to feed it the required signals to see if everything else is functional.
I know it powers up, and will still communicate with a PC via rs232, so that's a start at least.

[AmmoJammo]

I contacted the manufacturer of the ecu, and they said I could use these:
http://www.mouser.com/ds/2/389/stmicroelectronics_cd00000023-329627.pdf

They did also end their statement with a question mark and its obsolete, so I'm not so sure...

I was considering using these:
http://docs-asia.electrocomponents.com/webdocs/13c0/0900766b813c0822.pdf