12AU7: Difference between revisions

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|Part_nos=
|Part_nos=
|Description=twin medium-μ triode
|Description=twin medium-μ triode
|Used_in=122;547;555;575;581;581A;585;585A;C;D;181;502;
|Used_in=122;512;547;555;575;581;581A;585;585A;C;D;181;502;
|Designers=
|Designers=
}} with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits.  
}} with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits.  

Revision as of 14:54, 10 October 2021

12AU7A Tube

The 12AU7  (European: ECC82) is a twin medium-μ triode vacuum tube with a center-tapped filament for use in either 6.3 V / 300 mA or 12.6 V / 150 mA heater circuits.

It is likely the first tube manufactured with a B9A (Noval) miniature 9-pin base (from 1946).

The 5814 is a high-rel version with increased heater current.

Tek part number: 154-0041-00, 154-0287-00

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
Type C Plug-in (V3203,V4203) 157-0025-00 All
Type D Plug-in 157-0049-00 All

Reference:

Tube aging procedure / Selection and checking procedure

Links

Used in