12BY7: Difference between revisions

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The '''12BY7''' is a miniature 6.5 W power pentode.  The '''12BY7A''' (European equivalent '''EL180''') is a compatible and slightly improved version.   
The '''12BY7''' is a miniature 6.5 W power pentode.  The '''12BY7A''' (European equivalent '''EL180''') is a compatible and slightly improved version.   


Both are Noval-socket, all-glass types and share the EIA 9BF pinout with a number of other miniature pentode tubes of the era.
Both are all-glass types with a {{B9A base}} and share the EIA 9BF pinout with a number of other miniature pentode tubes of the era.


==Data sheets and Links==
==Data sheets and Links==

Revision as of 09:32, 2 July 2018

The 12BY7 is a miniature 6.5 W power pentode. The 12BY7A (European equivalent EL180) is a compatible and slightly improved version.

Both are all-glass types with a B9A (Noval) miniature 9-pin base and share the EIA 9BF pinout with a number of other miniature pentode tubes of the era.

Data sheets and Links

9BF socket diagram
9BF socket diagram

Used in

  • the output stage of the 1121
  • the first stage of the 535, 545A, and 555

Pictures