Tube cross-reference
3A5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3A5 power - triode single (under 10w). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 3A5
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.
DCC90 Voltage - Dual Triode (similar)
- Base
- B7G
- Socket
- B7G
- Base pins
- 7
- Sections
- 2
- Heater voltage
- 1.4 V
- Heater current
- 0.22 A
Replacement tubes for 3A5
The following tubes are recorded as possible replacements for 3A5. This direction does not establish that 3A5 can replace them.
Voltage - Dual Triode (similar)
The database records DCC90 as a possible replacement for3A5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Triode Single (under 10W) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 7BC | B7G |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.11 A | 0.22 A |
Where 3A5 can be used as the replacement
In these recorded relationships, 3A5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 3A5.
Voltage - Dual Triode (similar)
The database records 3A5 as a possible replacement forDCC90.
No special restrictions are recorded for this substitution.
| Specification | 3A5 replacement | Original tube |
|---|---|---|
| Tube type | Power - Triode Single (under 10W) | Voltage - Dual Triode (similar) |
| Construction | Triode-Triode | Triode-Triode |
| Base | 7BC | B7G |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 2.8 V | 1.4 V |
| Heater current | 0.11 A | 0.22 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 3A5 specifications →