Looking for info on 12mm stud mount transistor MEDL ESM 3004

K

Kim Clay

Guest
Large NPN stud mount device with "flags" for lead connections E & B.
73mm tall
22mm dia ceramic body
30mm OD mounting hex (27mm across flats)
12mm stud mount

1987-89 date codes

MEDL seems to be the old Marconi Electronic Devices Ltd.

These are mounted on water cooled heat sinks & (I think) used as
drivers for a SCR stack.

Thanks for looking - Kim
 

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