On 06/05/2017 05:38 PM, Al Kossow via cctalk wrote: > > On 6/5/17 2:06 PM, Brent Hilpert via cctalk wrote: > >> I checked several Moto databooks from 1969 into the 70s last night and >> didn't find it. (Not to suggest my checking is the last word). >> SDA7 is not a 'standard' Motorola-style number. >> Might have been a custom order. >> >> > the 1972 books came in today, and I see no sign of them either. > > SD can be anything but usually with moto its a special tested or special package sometimes both. For that PS I've used a pair of 2n2905s with their cans soldered together (thermal common) after picking two with the same beta and Vbe. Works fine for 20 years so far.
No majick there. Allison
