6AU6
The 6AU6 (European equivalent EF94, Russian equivalent 6Ж4П) is an RF pentode 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.
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 Note1 |
| 502 (V414,V444) | 157-0056-00 | Before Mod M6179 |
Note1: Replaced by raw 6AU6 with instrument mod
Reference:
Links
- Tung Sol 6AU6 Datasheet (PDF)
- 6AU6 / 6AU6A / 6AU6WA @ radiomuseum.org
Pictures
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6AU6 and 12AU6 tubes
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6AU6A (Tek p/n 157-0059-00)
