28 May TDK-EPC (Epcos) donates inductors!
These things are really a work of art – their helical windings are extremely pretty. They have a very high saturation current of 24A, and should work nicely in the MPPTs.
The donation saves me a huge amount of effort to custom wind dozens of inductors for the next revision of the board. Plus, they’re shielded and made even my last board revision look electrically quiet.
Check them out!
EDIT: Yep, they work just fine, though I think a piece of cardboard along the foam pad to keep the structure rigid would go a long way to keeping the parts from being damaged in shipping.