Choosing IGBTs for a project

[haxby]

Hi all,

The short question:

I need an IGBT that is in a TO247 package where the mounting tab is insulated electrically. Switching current around 50A or more, and voltage around 500 or more.....Is there such a beast?

The long questions:
So that I don't have to bug forums for questions like this in future, what tools do you use where you can do a parametric search of various suppliers of mosfets and igbt's...... Or do you just have to spend a lot of time sifting through hundreds of datasheets before you make a decision?

[Hydron]

Jump on digikey if you want parametric search and a wide enough range of stocked parts to make it useful (and a website that is nice and responsive, vs one that looks all fancy but sucks to use). As blueskull said, sounds like your best bet is IXYS (for isolated TO-247 as well as TO-264).

[Vovk_Z]

witching current around 50A or more, and voltage around 500 or more.....Is there such a beast?

I want to warn (maybe you don't need it): F-type case usually has much worse thermal conductivity. (I am talking about TO220F, but it possibly the same for TO247F). So it is much better to use thermal-conductive ceramics with heavy-loaded transistors.

[T3sl4co1l]

Certainly not very many.  What for?

Insulators are cheap and plentiful.  You may have trouble reaching full rated current, due to power dissipation -- insulators aren't the greatest thermal conductors (unless you happen upon some AlN plates, or hardcoat anodized aluminum isn't bad either).  Not to mention frequency, which is unstated.

These problems exist for any insulator, anyway, so you will find for example the "full-pack" (fully encapsulated) types have much lower DC current or power limits for the same reason a tabbed device with external insulation has reduced limits.

The best of course are ceramic (often AlN or relatives), direct bonded, but yeah, you'll have to shop around, and you'll find a limited selection.

Tim