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Tube Tinker — Electron Tube Database

Tube cross-reference

KTZ63 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the KTZ63 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for KTZ63

The following tubes are recorded as possible replacements for KTZ63. This direction does not establish that KTZ63 can replace them.

6K7GT

Voltage Pentode - Remote Cutoff (single)

American To Foreign

The database records 6K7GT as a possible replacement forKTZ63.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage Pentode - Remote Cutoff (single)Voltage Pentode - Remote Cutoff (single)
ConstructionPentodePentode
BaseNot recorded7R
SocketNot recordedIO
Base pinsNot recorded8
Sections11
Heater voltage6.3 V6.3 V
Heater current0.3 A0.3 A

Where KTZ63 can be used as the replacement

In these recorded relationships, KTZ63 is the replacement tube. The listed original tubes are not automatically suitable as replacements for KTZ63.

6J7GT

Voltage Radio Detector Converter

Foreign To American

The database records KTZ63 as a possible replacement for6J7GT.

No special restrictions are recorded for this substitution.

SpecificationKTZ63 replacementOriginal tube
Tube typeVoltage Pentode - Remote Cutoff (single)Voltage Radio Detector Converter
ConstructionPentodePentode
BaseNot recorded7R
SocketNot recordedIO
Base pinsNot recorded7
Sections11
Heater voltage6.3 V6.3 V
Heater current0.3 A0.3 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 KTZ63 specifications →