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First production TO3 package Silicon power transistor?

N

N_Cook

Jan 1, 1970
0
Type , year and manufacturer ?
a long time after 1954 TI Si prototype , but how long
 
N

N_Cook

Jan 1, 1970
0
N_Cook said:
Type , year and manufacturer ?
a long time after 1954 TI Si prototype , but how long


1967 the all/some? Silicon Sansui AU-777 integrated amp came out , anyone
know what output devices it used?
 
N

N_Cook

Jan 1, 1970
0
2SD143 x2 2SD218 x2 /ch

12/ch wrms @ 8ohm.

Both made by NEC, well in 1976 anyway, I've no earlier Japanese data

Any counter-advances on 1967 for earliest production TO3?
 
H

Holloway,Graham \(UK\)

Jan 1, 1970
0
N_Cook said:
Type , year and manufacturer ?
a long time after 1954 TI Si prototype , but how long
I seem to remember getting some free samples of the planar version of the
2N3055 from (I think) Solitron in about 1964. I used them to make a
quasi-complimentary audio amplfier. The standard 2N3055 must have been
around already.

Graham H
 
N

N_Cook

Jan 1, 1970
0
from // thread on r.a.r.p (includes interesting near monograph on earlier
expensive military Si power devices)

HH Scott model 260, 80-Watt, Solid State integrated stereo amplifier , 1965,
used 2N3055 apparently
 
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