Tube cross-reference

6K7 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6K7 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6K7

The following tubes are recorded as possible replacements for 6K7. This direction does not establish that 6K7 can replace them.

EF39

Voltage Pentode - Remote Cutoff (single)

Foreign To American

The database records EF39 as a possible replacement for6K7.

Parallel heater circuits only

Specification	Original tube	Replacement
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	OCTAL
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.2 A

5732

Voltage Pentode - Remote Cutoff (single)

Receiving To Industrial Tubes

The database records 5732 as a possible replacement for6K7.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	IO
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

6K7G

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7G as a possible replacement for6K7.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

6K7GT

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7GT as a possible replacement for6K7.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

6U7G

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6U7G as a possible replacement for6K7.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	Not recorded
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

Where 6K7 can be used as the replacement

In these recorded relationships, 6K7 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6K7.

EF39

Voltage Pentode - Remote Cutoff (single)

American To Foreign

The database records 6K7 as a possible replacement forEF39.

Parallel heater circuits only

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	OCTAL
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.2 A

6K7G

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7 as a possible replacement for6K7G.

No special restrictions are recorded for this substitution.

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

6K7GT

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7 as a possible replacement for6K7GT.

No special restrictions are recorded for this substitution.

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 A

6S7

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7 as a possible replacement for6S7.

Parallel heater circuits only

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	Not recorded
Socket	IO	IO
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.15 A

6S7G

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7 as a possible replacement for6S7G.

Parallel heater circuits only

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7
Socket	IO	IO
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.15 A

6U7G

Voltage Pentode - Remote Cutoff (single)

Receiving Tubes

The database records 6K7 as a possible replacement for6U7G.

No special restrictions are recorded for this substitution.

Specification	6K7 replacement	Original tube
Tube type	Voltage Pentode - Remote Cutoff (single)	Voltage Pentode - Remote Cutoff (single)
Construction	Pentode	Pentode
Base	7R	7R
Socket	IO	Not recorded
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.3 A	0.3 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 6K7 specifications →