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6LN8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6LN8 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.

Exact variations of 6LN8

These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.

  • 6BL8

    Voltage Radio Detector Converter

    Base
    9DC
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.45 A
  • ECF80

    Voltage Triode Pentode

    Base
    9C12
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.43 A

Replacement tubes for 6LN8

The following tubes are recorded as possible replacements for 6LN8. This direction does not establish that 6LN8 can replace them.

LCF80

Voltage Radio Detector Converter

Foreign To American

The database records LCF80 as a possible replacement for6LN8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DCNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 V6 V
Heater current0.45 A0.45 A
6BL8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6BL8 as a possible replacement for6LN8.

  • Parallel heater circuits only
  • No-warmup series circuits only
SpecificationOriginal tubeReplacement
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DC9DC
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 V6.3 V
Heater current0.45 A0.45 A

Where 6LN8 can be used as the replacement

In these recorded relationships, 6LN8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6LN8.

LCF80

Voltage Radio Detector Converter

American To Foreign

The database records 6LN8 as a possible replacement forLCF80.

No special restrictions are recorded for this substitution.

Specification6LN8 replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DCNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 V6 V
Heater current0.45 A0.45 A
6BL8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6LN8 as a possible replacement for6BL8.

No special restrictions are recorded for this substitution.

Specification6LN8 replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DC9DC
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 V6.3 V
Heater current0.45 A0.45 A
6U8

Voltage Radio Detector Converter

Receiving Tubes

The database records 6LN8 as a possible replacement for6U8.

No special restrictions are recorded for this substitution.

Specification6LN8 replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DC9AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 V6.3 V
Heater current0.45 A0.45 A
6U8A

Voltage Radio Detector Converter

Receiving Tubes

The database records 6LN8 as a possible replacement for6U8A.

No special restrictions are recorded for this substitution.

Specification6LN8 replacementOriginal tube
Tube typeVoltage Radio Detector ConverterVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DCEIA 9AE
SocketB9AB9A
Base pins99
Sections22
Heater voltage6 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 6LN8 specifications →