Tube cross-reference
6B8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6B8 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6B8
The following tubes are recorded as possible replacements for 6B8. This direction does not establish that 6B8 can replace them.
Voltage Radio Detector Converter
The database records EBF32 as a possible replacement for6B8.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | Not recorded |
| Socket | IO | SIDE8 |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.2 A |
Voltage Pentode or Tetrode (under 100V)
The database records 6B8G as a possible replacement for6B8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode or Tetrode (under 100V) |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | InternationalOctal |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6B8GT as a possible replacement for6B8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where 6B8 can be used as the replacement
In these recorded relationships, 6B8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 6B8.
Voltage Radio Detector Converter
The database records 6B8 as a possible replacement forEBF32.
- Parallel heater circuits only
| Specification | 6B8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | Not recorded |
| Socket | IO | SIDE8 |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.2 A |
Voltage Pentode or Tetrode (under 100V)
The database records 6B8 as a possible replacement for6B8G.
No special restrictions are recorded for this substitution.
| Specification | 6B8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Pentode or Tetrode (under 100V) |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | InternationalOctal |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Voltage Radio Detector Converter
The database records 6B8 as a possible replacement for6B8GT.
No special restrictions are recorded for this substitution.
| Specification | 6B8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 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 6B8 specifications →