Tube cross-reference
17AX3 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 17AX3 rectifier - damper diode. Compare core specifications and verify every restriction before using a replacement.
Where 17AX3 can be used as the replacement
In these recorded relationships, 17AX3 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 17AX3.
17BW3
Receiving TubesRectifier - Damper Diode
The database records 17AX3 as a possible replacement for17BW3.
- Parallel heater circuits only
| Specification | 17AX3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - Damper Diode | Rectifier - Damper Diode |
| Construction | Rectifier | Rectifier |
| Base | 12BE | 12FX |
| Socket | B12C | B12C |
| Base pins | 12 | 12 |
| Sections | 1 | 1 |
| Heater voltage | 16.8 V | 16.8 V |
| Heater current | 0.45 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 17AX3 specifications →