Just fyi, I'm lik'n what I see about the SiR178DP here in the specs: https://www.vishay.com/docs/77598/sir178dp.pdf

There's also the SiRA20BDP, looks slightly better than the SiRA20DP:

https://www.vishay.com/docs/76212/sira20dp.pdf

https://www.vishay.com/docs/66830/sira20bdp.pdf

Dunno how to get my hands on a couple though.