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Tube Tinker — Electron Tube Database

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12AU5GA alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 12AU5GA power - tv horizontal output (sweep). Compare core specifications and verify every restriction before using a replacement.

No alternatives recorded

Tube Tinker does not currently have an exact variation or directional substitution recorded for 12AU5GA.

Verify before substituting

Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.

View the complete 12AU5GA specifications →