Tube cross-reference
3AL5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3AL5 diode (not rectifier). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 3AL5
The following tubes are recorded as possible replacements for 3AL5. This direction does not establish that 3AL5 can replace them.
Diode (NOT rectifier)
The database records XAA91 as a possible replacement for3AL5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | E7-1 | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.6 A | 0.6 A |
Where 3AL5 can be used as the replacement
In these recorded relationships, 3AL5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 3AL5.
Diode (NOT rectifier)
The database records 3AL5 as a possible replacement forXAA91.
No special restrictions are recorded for this substitution.
| Specification | 3AL5 replacement | Original tube |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | E7-1 | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.6 A | 0.6 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 3AL5 specifications →