transistor substitution question

[rtate]

For the sst-01 softstart the plan spec  bc550b for the curcuit.
I am having trouble locating this piece in my area(Canada)
Locally I have   bc547b , bc548 and bc557b available.
Will any of these work and if so which would be the best suited?
Thanks...

[peranders]

Almost any NPN transistor will do. BC547B is quite alright.

[rtate]

Thanks !!!!