Tube cross-reference
VR105 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the VR105 voltage regulator. Compare core specifications and verify every restriction before using a replacement.
Exact variations of VR105
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.
0C3 Voltage Regulator
- Base
- 4AJ
- Socket
- IO
- Base pins
- 8
- Sections
- 1
- Heater voltage
- Not recorded
- Heater current
- Not recorded
Replacement tubes for VR105
The following tubes are recorded as possible replacements for VR105. This direction does not establish that VR105 can replace them.
Voltage Regulator
The database records OC3 as a possible replacement forVR105.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Regulator | Voltage Regulator |
| Construction | VoltageRegulator | VoltageRegulator |
| Base | 4AJ | 4AJ |
| Socket | Not recorded | IO |
| Base pins | 4 | 8 |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
Voltage Regulator
The database records OC3A as a possible replacement forVR105.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Regulator | Voltage Regulator |
| Construction | VoltageRegulator | VoltageRegulator |
| Base | 4AJ | 4AJ |
| Socket | Not recorded | IO |
| Base pins | 4 | 8 |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
Where VR105 can be used as the replacement
In these recorded relationships, VR105 is the replacement tube. The listed original tubes are not automatically suitable as replacements for VR105.
Voltage Regulator
The database records VR105 as a possible replacement for0C3.
No special restrictions are recorded for this substitution.
| Specification | VR105 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Regulator | Voltage Regulator |
| Construction | VoltageRegulator | VoltageRegulator |
| Base | 4AJ | 4AJ |
| Socket | Not recorded | IO |
| Base pins | 4 | 8 |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
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 VR105 specifications →