Tube cross-reference

6L6 alternatives, equivalents, and replacements

Review exact electrical variations and directional substitutions recorded for the 6L6 power - beam (not sweep). Compare core specifications and verify every restriction before using a replacement.

Replacement tubes for 6L6

The following tubes are recorded as possible replacements for 6L6. This direction does not establish that 6L6 can replace them.

EL37

Power - Pentode (NOT beam)

Foreign To American

The database records EL37 as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Pentode (NOT beam)
Construction	BeamPower	Pentode
Base	7AC	Octal
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	1.4 A

1622

Power - Beam (NOT sweep)

Receiving To Industrial Tubes

The database records 1622 as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	B9A
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

5932

Power - Beam (NOT sweep)

Receiving To Industrial Tubes

The database records 5932 as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

5881

Power - Beam (NOT sweep)

Receiving Tubes

The database records 5881 as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	T7AC
Socket	IO	IO
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6G

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6G as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6GA

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6GA as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6GB

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6GB as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6GC

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6GC as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

7581

Power - Beam (NOT sweep)

Receiving Tubes

The database records 7581 as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	Not recorded
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

7581A

Power - Beam (NOT sweep)

Receiving Tubes

The database records 7581A as a possible replacement for6L6.

No special restrictions are recorded for this substitution.

Specification	Original tube	Replacement
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	Not recorded
Socket	IO	B9A
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

Where 6L6 can be used as the replacement

In these recorded relationships, 6L6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6L6.

EL37

Power - Pentode (NOT beam)

American To Foreign

The database records 6L6 as a possible replacement forEL37.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Pentode (NOT beam)
Construction	BeamPower	Pentode
Base	7AC	Octal
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	1.4 A

1614

Power - Beam (NOT sweep)

Communications And Special Purpose Tubes

The database records 6L6 as a possible replacement for1614.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	Not recorded
Socket	IO	B7G
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

1622

Power - Beam (NOT sweep)

Communications And Special Purpose Tubes

The database records 6L6 as a possible replacement for1622.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	B9A
Base pins	8	7
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6G

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6 as a possible replacement for6L6G.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6GA

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6 as a possible replacement for6L6GA.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 A

6L6GB

Power - Beam (NOT sweep)

Receiving Tubes

The database records 6L6 as a possible replacement for6L6GB.

No special restrictions are recorded for this substitution.

Specification	6L6 replacement	Original tube
Tube type	Power - Beam (NOT sweep)	Power - Beam (NOT sweep)
Construction	BeamPower	BeamPower
Base	7AC	7AC
Socket	IO	IO
Base pins	8	8
Sections	1	1
Heater voltage	6.3 V	6.3 V
Heater current	0.9 A	0.9 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 6L6 specifications →