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Tube Tinker — Electron Tube Database

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E80CF alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the E80CF voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.

Exact variations of E80CF

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.

  • 7643

    Voltage Radio Detector Converter

    Base
    Not recorded
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    6.3 V
    Heater current
    0.33 A

Replacement tubes for E80CF

The following tubes are recorded as possible replacements for E80CF. This direction does not establish that E80CF can replace them.

7643

Voltage Radio Detector Converter

American To Foreign

The database records 7643 as a possible replacement forE80CF.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseNOVALNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.33 A0.33 A

Where E80CF can be used as the replacement

In these recorded relationships, E80CF is the replacement tube. The listed original tubes are not automatically suitable as replacements for E80CF.

6BL8

Voltage Radio Detector Converter

Foreign To American

The database records E80CF as a possible replacement for6BL8.

  • Parallel heater circuits only
SpecificationE80CF replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseNOVAL9DC
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.33 A0.45 A
7643

Voltage Radio Detector Converter

Foreign To American

The database records E80CF as a possible replacement for7643.

No special restrictions are recorded for this substitution.

SpecificationE80CF replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
BaseNOVALNot recorded
SocketB9AB9A
Base pins99
Sections22
Heater voltage6.3 V6.3 V
Heater current0.33 A0.33 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 E80CF specifications →