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Tube cross-reference

6HK5 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6HK5 voltage - triode (single high frequency). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6HK5

The following tubes are recorded as possible replacements for 6HK5. This direction does not establish that 6HK5 can replace them.

6HA5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HA5 as a possible replacement for6HK5.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.18 A
6HM5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HM5 as a possible replacement for6HK5.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.18 A
6HQ5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HQ5 as a possible replacement for6HK5.

No special restrictions are recorded for this substitution.

SpecificationOriginal tubeReplacement
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.2 A

Where 6HK5 can be used as the replacement

In these recorded relationships, 6HK5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6HK5.

6HA5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HK5 as a possible replacement for6HA5.

No special restrictions are recorded for this substitution.

Specification6HK5 replacementOriginal tube
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.18 A
6HM5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HK5 as a possible replacement for6HM5.

No special restrictions are recorded for this substitution.

Specification6HK5 replacementOriginal tube
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.18 A
6HQ5

Voltage - Triode (single high frequency)

Receiving Tubes

The database records 6HK5 as a possible replacement for6HQ5.

No special restrictions are recorded for this substitution.

Specification6HK5 replacementOriginal tube
Tube typeVoltage - Triode (single high frequency)Voltage - Triode (single high frequency)
ConstructionTriodeTriode
Base7GM7GM
SocketB7GB7G
Base pins77
Sections11
Heater voltage6.3 V6.3 V
Heater current0.19 A0.2 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 6HK5 specifications →