I'm late to the party but I believe these may be better subs.
2SD357(D, E) ==> 2SC4883 / 4883A
http://www.semicon.sanken-ele.co.jp/sk_content/2sc4883_ds_en.pdf
2SB527(D, E) ==> 2SA1859 / 1859A
http://www.semicon.sanken-ele.co.jp/sk_content/2sa1859_ds_en.pdf
Avaliable at Digikey, no affiliation