The 12AU6 is the equivalent version with a 12 V heater.
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.
Tek part number:
- 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|
|502 (V414,V444)||157-0056-00||Before Mod M6179|
|Type CA Plug-in||157-0059-00||All|
|502, 505 (V414, V444)||157-0073-00||?|
Note1: Replaced by raw 6AU6 with instrument mod