Skip to main content

Tube cross-reference

6AS5 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6AS5 power - beam single (not sweep) (under 10w). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6AS5

The following tubes are recorded as possible replacements for 6AS5. This direction does not establish that 6AS5 can replace them.

6CA5

Power - Beam Single (NOT sweep) (under 10W)

Receiving Tubes

The database records 6CA5 as a possible replacement for6AS5.

  • Parallel heater circuits only
SpecificationOriginal tubeReplacement
Tube typePower - Beam Single (NOT sweep) (under 10W)Power - Beam Single (NOT sweep) (under 10W)
ConstructionBeamPowerBeamPower
Base77CV
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.8 A1.2 A

Where 6AS5 can be used as the replacement

In these recorded relationships, 6AS5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6AS5.

6CA5

Power - Beam Single (NOT sweep) (under 10W)

Receiving Tubes

The database records 6AS5 as a possible replacement for6CA5.

  • Parallel heater circuits only
Specification6AS5 replacementOriginal tube
Tube typePower - Beam Single (NOT sweep) (under 10W)Power - Beam Single (NOT sweep) (under 10W)
ConstructionBeamPowerBeamPower
Base77CV
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.8 A1.2 A
6CU5

Power - Beam Single (NOT sweep) (under 10W)

Receiving Tubes

The database records 6AS5 as a possible replacement for6CU5.

  • Parallel heater circuits only
Specification6AS5 replacementOriginal tube
Tube typePower - Beam Single (NOT sweep) (under 10W)Power - Beam Single (NOT sweep) (under 10W)
ConstructionBeamPowerBeamPower
Base77CY
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.8 A1.2 A

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 6AS5 specifications →