6AU6: Difference between revisions

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|Description=RF pentode
|Description=RF pentode
|an=an
|an=an
|Used_in=107;181;310;502;502A;512;513;531;531A;535;545;545A;546;547;549;555;575;581;581A;585;585A;C;CA;
|Used_in=107;181;310;502;502A;512;513;531;531A;535;545;545A;546;547;549;555;575;581;581A;585;585A;C;CA;Q;
|Designers=
|Designers=
}} for up to ~50 MHz with a {{B7G base}}, introduced in 1946.
}} for up to ~50 MHz with a {{B7G base}}, introduced in 1946.
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The 6AU6A is an improved version for equipment with series-connected heaters that ha controlled warm-up and heater-to-cathode voltage rating increased to 200 V.  The 6AU6WA is a ruggedized version.
The 6AU6A is an improved version for equipment with series-connected heaters that ha controlled warm-up and heater-to-cathode voltage rating increased to 200 V.  The 6AU6WA is a ruggedized version.
The 8425 (used in [[Q|Type Q]]) is an improved successor version.


Tek part number:
Tek part number:
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==Links==
==Links==
* [http://w140.com/6au6.pdf Tung Sol 6AU6 Datasheet (PDF)]
* [http://w140.com/6au6.pdf Tung Sol 6AU6 Datasheet (PDF)]
* [[tube:6au6 | 6AU6]] / [[tube:6au6a|6AU6A]] / [[tube:6au6wa|6AU6WA]] @ radiomuseum.org
* [[tube:6au6 | 6AU6]] / [[tube:6au6a|6AU6A]] / [[tube:6au6wa|6AU6WA]] / [[tube:8425|8425]] @ radiomuseum.org


==Pictures==
==Pictures==

Revision as of 08:52, 22 February 2022

6AU6 and 12AU6 Tubes

The 6AU6  (European: EF94) (Russian: 6Ж4П) (P/N 154-0022-00, 157-0073-00, 157-0059-00, 154-0284-00) is an RF pentode vacuum tube for up to ~50 MHz with a miniature B7G 7-pin base, introduced in 1946.

The 12AU6 is the equivalent version with a 12 V heater.

The 6AU6 is used in the 513, 581, 585 and others as an error amplifier, in the Type 53/54C plugin, and others.

The 6AU6A is an improved version for equipment with series-connected heaters that ha controlled warm-up and heater-to-cathode voltage rating increased to 200 V. The 6AU6WA is a ruggedized version.

The 8425 (used in Type Q) is an improved successor version.

Tek part number:

  • 154-0022-00
  • 157-0073-00 (selected pair)
  • 157-0059-00 (6AU6A)
  • 154-0284-00 (6AU6WA)
Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
310 157-0034-00 See Note 1
502 (V414,V444) 157-0056-00 Before Mod M6179
Type CA Plug-in 157-0059-00 All
502, 505 (V414, V444) 157-0073-00 ?

Note 1: Replaced by raw 6AU6 with instrument mod

Reference:

Tube aging procedure / Selection and checking procedure

Links

Pictures