6AU6
The 6AU6 (European equivalent EF94) 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.
Links
- Tung Sol 6AU6 Datasheet (PDF)
- 6AU6 / 6AU6A @ radiomuseum.org]
Pictures
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6AU6 and 12AU6 tubes
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6AU6A (Tek p/n 157-0059-00)
