Tube cross-reference
EBC81 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EBC81 voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Exact variations of EBC81
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.
6BD7 Voltage - Triode (with diode, heptode or hexode)
- Base
- NOVAL
- Socket
- B9A
- Base pins
- Not recorded
- Sections
- 2
- Heater voltage
- 6.3 V
- Heater current
- 0.23 A
Replacement tubes for EBC81
The following tubes are recorded as possible replacements for EBC81. This direction does not establish that EBC81 can replace them.
Voltage - Triode (with diode, heptode or hexode)
The database records 6BD7 as a possible replacement forEBC81.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Diode-Diode-Triode | Diode-Triode |
| Base | NOVAL | NOVAL |
| Socket | B9A | B9A |
| Base pins | Not recorded | Not recorded |
| Sections | 3 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.23 A | 0.23 A |
Where EBC81 can be used as the replacement
In these recorded relationships, EBC81 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EBC81.
Voltage - Triode (with diode, heptode or hexode)
The database records EBC81 as a possible replacement for6BD7.
No special restrictions are recorded for this substitution.
| Specification | EBC81 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage - Triode (with diode, heptode or hexode) |
| Construction | Diode-Diode-Triode | Diode-Triode |
| Base | NOVAL | NOVAL |
| Socket | B9A | B9A |
| Base pins | Not recorded | Not recorded |
| Sections | 3 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.23 A | 0.23 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 EBC81 specifications →