Tube cross-reference
6BK4C alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6BK4C triode - hv shunt regulator. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 6BK4C
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.
6EL4A Triode - HV Shunt Regulator
- Base
- 8GC
- Socket
- IO
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.2 A
Replacement tubes for 6BK4C
The following tubes are recorded as possible replacements for 6BK4C. This direction does not establish that 6BK4C can replace them.
Triode - HV Shunt Regulator
The database records 6EL4A as a possible replacement for6BK4C.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Triode - HV Shunt Regulator |
| Construction | Triode | Triode |
| Base | SMW | 8GC |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Triode - HV Shunt Regulator
The database records 6EN4 as a possible replacement for6BK4C.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Triode - HV Shunt Regulator |
| Construction | Triode | Triode |
| Base | SMW | 8NJ |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Where 6BK4C can be used as the replacement
In these recorded relationships, 6BK4C is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6BK4C.
Triode - HV Shunt Regulator
The database records 6BK4C as a possible replacement for6BK4.
No special restrictions are recorded for this substitution.
| Specification | 6BK4C replacement | Original tube |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Triode - HV Shunt Regulator |
| Construction | Triode | Triode |
| Base | SMW | 8GC |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Triode - HV Shunt Regulator
The database records 6BK4C as a possible replacement for6BK4A.
No special restrictions are recorded for this substitution.
| Specification | 6BK4C replacement | Original tube |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Triode - HV Shunt Regulator |
| Construction | Triode | Triode |
| Base | SMW | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 A |
Triode - HV Shunt Regulator
The database records 6BK4C as a possible replacement for6BK4B.
No special restrictions are recorded for this substitution.
| Specification | 6BK4C replacement | Original tube |
|---|---|---|
| Tube type | Triode - HV Shunt Regulator | Triode - HV Shunt Regulator |
| Construction | Triode | Triode |
| Base | SMW | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.2 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 6BK4C specifications →