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Tube Tinker — Electron Tube Database

Tube cross-reference

6AT8A alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6AT8A voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6AT8A

The following tubes are recorded as possible replacements for 6AT8A. This direction does not establish that 6AT8A can replace them.

6AT8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6AT8 as a possible replacement for6AT8A.

  • Parallel heater circuits only
  • No-warmup series circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9DW
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6BE8A

Voltage Triode Pentode

Receiving Tubes

The database records 6BE8A as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DWNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6BR8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6BR8A as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9FA
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6CG8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6CG8A as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9GF
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6CL8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6CL8 as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodeTetrode-Triode
Base9DWNot recorded
SocketB9ANot recorded
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6CL8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6CL8A as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodeTetrode-Triode
Base9DW9FX
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6FG7

Voltage Radio Detector Converter

Receiving Tubes

The database records 6FG7 as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9GF
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6FV8

Voltage Triode Pentode

Receiving Tubes

The database records 6FV8 as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DW9FA
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6FV8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6FV8A as a possible replacement for6AT8A.

  • Not suitable for all circuits
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9FA
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A

Where 6AT8A can be used as the replacement

In these recorded relationships, 6AT8A is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6AT8A.

6AT8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6AT8A as a possible replacement for6AT8.

No special restrictions are recorded for this substitution.

Specification6AT8A replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9DW
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6CG8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6AT8A as a possible replacement for6CG8.

  • Not suitable for all circuits
Specification6AT8A replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DWNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 A
6CG8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6AT8A as a possible replacement for6CG8A.

  • Not suitable for all circuits
Specification6AT8A replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DW9GF
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.45 A0.45 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 6AT8A specifications →