Tube cross-reference
EL803 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EL803 power - pentode single (not beam) (under 10w). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for EL803
The following tubes are recorded as possible replacements for EL803. This direction does not establish that EL803 can replace them.
Power - Pentode Single (NOT beam) (under 10W)
The database records 6CK6 as a possible replacement forEL803.
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9AR |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.65 A | 0.71 A |
Where EL803 can be used as the replacement
In these recorded relationships, EL803 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EL803.
Power - Pentode Single (NOT beam) (under 10W)
The database records EL803 as a possible replacement for6CK6.
- Not suitable for all circuits
| Specification | EL803 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9AR |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.65 A | 0.71 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 EL803 specifications →