Tube cross-reference
XXD alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the XXD voltage - dual triode (similar). Compare core specifications and verify every restriction before using a replacement.
Exact variations of XXD
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.
14AF7 Voltage - Dual Triode (similar)
- Base
- 8AC
- Socket
- Not recorded
- Base pins
- 8
- Sections
- 2
- Heater voltage
- 12.6 V
- Heater current
- 0.15 A
Replacement tubes for XXD
The following tubes are recorded as possible replacements for XXD. This direction does not establish that XXD can replace them.
Voltage - Dual Triode (similar)
The database records 14F7 as a possible replacement forXXD.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 8AC |
| Socket | B8G | LOCTAL8 |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage - Dual Triode (similar)
The database records 14AF7 as a possible replacement forXXD.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 8AC |
| Socket | B8G | Not recorded |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where XXD can be used as the replacement
In these recorded relationships, XXD is the replacement tube. The listed original tubes are not automatically suitable as replacements for XXD.
Voltage - Dual Triode (similar)
The database records XXD as a possible replacement for14AF7.
No special restrictions are recorded for this substitution.
| Specification | XXD replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | 8AC |
| Socket | B8G | Not recorded |
| Base pins | 8 | 8 |
| Sections | 2 | 2 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 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 XXD specifications →