Tube cross-reference
12AL5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 12AL5 voltage - radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 12AL5
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.
UAA91 Diode (NOT rectifier)
- Base
- Not recorded
- Socket
- B7G
- Base pins
- 7
- Sections
- 2
- Heater voltage
- 19 V
- Heater current
- 0.1 A
Replacement tubes for 12AL5
The following tubes are recorded as possible replacements for 12AL5. This direction does not establish that 12AL5 can replace them.
Diode (NOT rectifier)
The database records 10D2 as a possible replacement for12AL5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Radio Detector Converter | 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 | 12.6 V | 19 V |
| Heater current | 0.15 A | 0.1 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 12AL5 specifications →