I recall, that I have had RCA Datasheets/application notes from the German Distributor Alfred Neye ENAtechnik in Quickborn. Unfortunately I don't find this sheets sine a long time.
Here the exactly naming of this papers:
1) "Power Transistors BD750, BD751 Series"
RCA File Number 1251
Titel: "Silicon Transistors for 80- and 100-W Full-Complementary-Symmetry Audio Amplifiers" (Printed in USA/11-80)
2) "Power Transistors BD550, BD550A, BD550B",
RCA File Number 1109
Titel: "Silicon Transistors for 70-, 120-, 200- and 300-W Quasi-Complementary-Symmetry Audio Amplifiers" (8.78/AT3679-10.78)
I don't know, whether the term 10.78 and 11-80 means the date of release, but it is not excluded.
Who can post this papers ??
Thank you for your efforts in advance.
In the attached files you will find a schematic, where this types are in use.
Here the exactly naming of this papers:
1) "Power Transistors BD750, BD751 Series"
RCA File Number 1251
Titel: "Silicon Transistors for 80- and 100-W Full-Complementary-Symmetry Audio Amplifiers" (Printed in USA/11-80)
2) "Power Transistors BD550, BD550A, BD550B",
RCA File Number 1109
Titel: "Silicon Transistors for 70-, 120-, 200- and 300-W Quasi-Complementary-Symmetry Audio Amplifiers" (8.78/AT3679-10.78)
I don't know, whether the term 10.78 and 11-80 means the date of release, but it is not excluded.
Who can post this papers ??
Thank you for your efforts in advance.
In the attached files you will find a schematic, where this types are in use.
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Don't have any RCA app notes but since I dug through the attic for you, you can read this & throw it away. 1986 RCA SK book shows BD550/a/b as SK9031. BD750/a/b is SK9033. These are NPN TO3 BJT, PNP complements 1 digit higher. SK9033 suffixed as 60, SK9034 suffixed as 61, and I own some NTE60's installed an 80V rail quasi comp amp. SK9031 Pt 150w, Ic 20a (9032 is 16a) Bvceo 160, typ hfe 20, typ Vcesat 2v@5a, Ft 2 mhz. SK9033 250 watt, 20A, Vceo 140v, typ hfe 75, Vcesat 2v@5a Ft 2mhz.
Parts seem to be a bit tougher than a 2n3055.
For those that don't know NTE started as a copy of the RCA SK and similar GE replacement part lines, using primarily imported parts. NTE is the only survivor of this marketing program. RCA & GE gave away the catalogs, NTE made the sale without having to hire any expensive salemen. The part numbers were the same except for the prefix.
Parts seem to be a bit tougher than a 2n3055.
For those that don't know NTE started as a copy of the RCA SK and similar GE replacement part lines, using primarily imported parts. NTE is the only survivor of this marketing program. RCA & GE gave away the catalogs, NTE made the sale without having to hire any expensive salemen. The part numbers were the same except for the prefix.
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Thank you for this advices.
in the databook about
Sitio Hasa - Circuito, Esquema, Reparacion, Integrado, Electronica, Hardware, Audio, Manual, Fallas, TV Color, Componente, Libro, Auto
and the URLs
Pagina principal Eshop
Pagina principal Eshop
Pagina principal Eshop
there are mentioned this SK-Series from RCA
and also by this URL as replacement for Altec's factory type No 121540:
Looking for RCA 121540 Transistor replacement
about
RHS
and
Card Catalog by title 8 29 101
I have found a PDF file ( I attached the excerpts from RCA), there are mentioned follow RCA papers:
2638 RCA RCA Silicon Power Circuits Manual, SP-50
2262 RCA RCA Silicon Power Circuits Manual, SP-51
878 RCA RCA SK Series Solid State Replacement Guide (SKG202-D)
147 RCA RCA SK Series Top of the Line Solid State Rep. Guide, 1978
3068 RCA RCA Solid-State Power Circuits (SP-52)
about
SK9034 PNP Power Transistor
there are still an offer for the type SK9034
in the databook about
Sitio Hasa - Circuito, Esquema, Reparacion, Integrado, Electronica, Hardware, Audio, Manual, Fallas, TV Color, Componente, Libro, Auto
and the URLs
Pagina principal Eshop
Pagina principal Eshop
Pagina principal Eshop
there are mentioned this SK-Series from RCA
and also by this URL as replacement for Altec's factory type No 121540:
Looking for RCA 121540 Transistor replacement
about
RHS
and
Card Catalog by title 8 29 101
I have found a PDF file ( I attached the excerpts from RCA), there are mentioned follow RCA papers:
2638 RCA RCA Silicon Power Circuits Manual, SP-50
2262 RCA RCA Silicon Power Circuits Manual, SP-51
878 RCA RCA SK Series Solid State Replacement Guide (SKG202-D)
147 RCA RCA SK Series Top of the Line Solid State Rep. Guide, 1978
3068 RCA RCA Solid-State Power Circuits (SP-52)
about
SK9034 PNP Power Transistor
there are still an offer for the type SK9034
Attachments
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