Tube cross-reference
6JW8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6JW8 power - pentode (not beam). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6JW8
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
ECF802 Power - TV Horizontal Output (sweep)
- Base
- 9C12
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.43 A
Replacement tubes for 6JW8
The following tubes are recorded as possible replacements for 6JW8. This direction does not establish that 6JW8 can replace them.
Power - TV Horizontal Output (sweep)
The database records ECF802 as a possible replacement for6JW8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - TV Horizontal Output (sweep) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | E9-1 | 9C12 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.43 A | 0.43 A |
Power - TV Horizontal Output (sweep)
The database records 6LX8 as a possible replacement for6JW8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - TV Horizontal Output (sweep) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | E9-1 | 9DC |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6 V |
| Heater current | 0.43 A | 0.45 A |
Where 6JW8 can be used as the replacement
In these recorded relationships, 6JW8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6JW8.
Power - TV Horizontal Output (sweep)
The database records 6JW8 as a possible replacement forECF802.
No special restrictions are recorded for this substitution.
| Specification | 6JW8 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - TV Horizontal Output (sweep) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | E9-1 | 9C12 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.43 A | 0.43 A |
Power - TV Horizontal Output (sweep)
The database records 6JW8 as a possible replacement for6LX8.
- Parallel heater circuits only
- No-warmup series circuits only
| Specification | 6JW8 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode (NOT beam) | Power - TV Horizontal Output (sweep) |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | E9-1 | 9DC |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6 V |
| Heater current | 0.43 A | 0.45 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 6JW8 specifications →