Hey, there ! Thanks for the replies, guys !
mvs sarma : great tips about N-channel subs (those sot-23 do look interesting)... I'm actually looking for a P-channel MOSFET "complimentary" to the BS170... if that makes any sense ! (OR some other "matched" N & P-channel pair, maybe ?... )
ronsimpson : yeah, I did check, and amongst the 39 000 + FETs, only 1 (!) came up: LP0701N3 (P-channel/logic level/Rds-on 1.5 Ohm). Its unavailable ! but MOUSER has it; really unsure about it "matching" the BS170, 'though ?... I'll try and figure that out.
Needless to say: any & all thoughts/suggestions welcomed, of course.
There. I said it anyhow.
Bye for now,
Joël