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Tube Tinker — Electron Tube Database

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10JY8 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 10JY8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.

Exact variations of 10JY8

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.

  • 10LZ8

    Voltage Triode Pentode

    Base
    9DX
    Socket
    B9A
    Base pins
    9
    Sections
    2
    Heater voltage
    10.5 V
    Heater current
    0.45 A

Replacement tubes for 10JY8

The following tubes are recorded as possible replacements for 10JY8. This direction does not establish that 10JY8 can replace them.

10EB8

Voltage Triode Pentode

Receiving Tubes

The database records 10EB8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10GN8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 10GN8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10HF8

Voltage Radio Detector Converter

Receiving Tubes

The database records 10HF8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9ANot recorded
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10JA8

Power - Beam (NOT sweep)

Receiving Tubes

The database records 10JA8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodePower - Beam (NOT sweep)
ConstructionPentode-TriodeBeamPower-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10LZ8

Voltage Triode Pentode

Receiving Tubes

The database records 10LZ8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
11JE8

Voltage Triode Pentode

Receiving Tubes

The database records 11JE8 as a possible replacement for10JY8.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.9 V
Heater current0.45 A0.45 A

Where 10JY8 can be used as the replacement

In these recorded relationships, 10JY8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 10JY8.

10GN8

Power - Pentode (NOT beam)

Receiving Tubes

The database records 10JY8 as a possible replacement for10GN8.

No special restrictions are recorded for this substitution.

Specification10JY8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Pentode (NOT beam)
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10HF8

Voltage Radio Detector Converter

Receiving Tubes

The database records 10JY8 as a possible replacement for10HF8.

No special restrictions are recorded for this substitution.

Specification10JY8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Radio Detector Converter
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9ANot recorded
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10JA8

Power - Beam (NOT sweep)

Receiving Tubes

The database records 10JY8 as a possible replacement for10JA8.

No special restrictions are recorded for this substitution.

Specification10JY8 replacementOriginal tube
Tube typeVoltage Triode PentodePower - Beam (NOT sweep)
ConstructionPentode-TriodeBeamPower-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
10LZ8

Voltage Triode Pentode

Receiving Tubes

The database records 10JY8 as a possible replacement for10LZ8.

No special restrictions are recorded for this substitution.

Specification10JY8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.5 V
Heater current0.45 A0.45 A
11JE8

Voltage Triode Pentode

Receiving Tubes

The database records 10JY8 as a possible replacement for11JE8.

No special restrictions are recorded for this substitution.

Specification10JY8 replacementOriginal tube
Tube typeVoltage Triode PentodeVoltage Triode Pentode
ConstructionPentode-TriodePentode-Triode
Base9DX9DX
SocketB9AB9A
Base pins99
Sections22
Heater voltage10.5 V10.9 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 10JY8 specifications →