Tube cross-reference
EF98 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the EF98 voltage pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Exact variations of EF98
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.
6ET6 Voltage Pentode or Tetrode (under 100V)
- Base
- Not recorded
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 6.3 V
- Heater current
- 0.3 A
Replacement tubes for EF98
The following tubes are recorded as possible replacements for EF98. This direction does not establish that EF98 can replace them.
Voltage Pentode or Tetrode (under 100V)
The database records 6ET6 as a possible replacement forEF98.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | MINIATURE | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Where EF98 can be used as the replacement
In these recorded relationships, EF98 is the replacement tube. The listed original tubes are not automatically suitable as replacements for EF98.
Voltage Pentode - Remote Cutoff (single)
The database records EF98 as a possible replacement for6ES6.
No special restrictions are recorded for this substitution.
| Specification | EF98 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | MINIATURE | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 A | 0.3 A |
Voltage Pentode or Tetrode (under 100V)
The database records EF98 as a possible replacement for6ET6.
No special restrictions are recorded for this substitution.
| Specification | EF98 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | MINIATURE | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.2 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 EF98 specifications →