View source for B9E base

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The 9-pin '''B9E (Novar) tube base''' is a larger variant of the {{B9A base}} developed for higher-powered American tubes 
such as the 7868, 6JE6A, etc.

It has nine pins with 1.02 mm (0.038") diameter in a 17.45 mm (0.687") pin circle diameter arc.

The similar [[B9D base|B9D (Magnoval) based]] used by comparable European tubes has the same pin circle geometry but the tube have a diameter of 1.27 mm (0.046"). Inserting Magnoval tubes into Novar sockets by force will widen the latter's contacts, thereby damaging the socket, whereas a Novar tube will not make reliable contact in a Magnoval socket.

Moreover, many Novar tubes have a glass nipple at bottom of tube which requires a center hole in the socket.

==See also==
* {{B7G base}}
* {{B9A base}}

==Links==
* [[wikipedia:Tube_socket#Other_socket_styles|Other socket styles @ Wikipedia]]

 
[[Category:Tube bases]]
[[Category:Standards]]