Tube cross-reference
6HF8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6HF8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6HF8
The following tubes are recorded as possible replacements for 6HF8. This direction does not establish that 6HF8 can replace them.
Power - Pentode (NOT beam)
The database records 6CX8 as a possible replacement for6HF8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6EB8 as a possible replacement for6HF8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Voltage Triode Pentode
The database records 6GN8 as a possible replacement for6HF8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6HZ8 as a possible replacement for6HF8.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 1.125 A |
Voltage Triode Tetrode
The database records 6JA8 as a possible replacement for6HF8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Tetrode |
| Construction | Pentode-Triode | Tetrode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6JE8 as a possible replacement for6HF8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.78 A |
Voltage Triode Pentode
The database records 6JV8 as a possible replacement for6HF8.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.6 A |
Voltage Triode Pentode
The database records 6LF8 as a possible replacement for6HF8.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.6 A |
Where 6HF8 can be used as the replacement
In these recorded relationships, 6HF8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6HF8.
Power - Pentode (NOT beam)
The database records 6HF8 as a possible replacement for6CX8.
No special restrictions are recorded for this substitution.
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6HF8 as a possible replacement for6EB8.
No special restrictions are recorded for this substitution.
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Voltage Triode Pentode
The database records 6HF8 as a possible replacement for6GN8.
No special restrictions are recorded for this substitution.
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6HF8 as a possible replacement for6HZ8.
- Parallel heater circuits only
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 1.125 A |
Voltage Triode Tetrode
The database records 6HF8 as a possible replacement for6JA8.
No special restrictions are recorded for this substitution.
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Tetrode |
| Construction | Pentode-Triode | Tetrode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.75 A |
Power - Pentode (NOT beam)
The database records 6HF8 as a possible replacement for6JE8.
No special restrictions are recorded for this substitution.
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Pentode (NOT beam) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.78 A |
Voltage Triode Pentode
The database records 6HF8 as a possible replacement for6JV8.
- Parallel heater circuits only
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.6 A |
Voltage Triode Pentode
The database records 6HF8 as a possible replacement for6KS8.
- Parallel heater circuits only
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | B9A |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.6 A |
Voltage Triode Pentode
The database records 6HF8 as a possible replacement for6LF8.
- Parallel heater circuits only
| Specification | 6HF8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DX | 9DX |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.75 A | 0.6 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 6HF8 specifications →