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|Part_nos= | |Part_nos= | ||
|Description=miniature 6.5 W power pentode | |Description=miniature 6.5 W power pentode | ||
|Used_in=106;163;531;533;535;536;541;543;535;545;545A;549;555; | |Used_in=106;163;531;533;535;536;541;543;535;545;545A;549;555;3A75; | ||
|Designers= | |Designers= | ||
}}. The '''12BY7A''' (European equivalent '''EL180''') is a compatible and slightly improved version. | }}. The '''12BY7A''' (European equivalent '''EL180''') is a compatible and slightly improved version. |