Tube cross-reference
HF93 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the HF93 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Exact variations of HF93
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.
12BA6 Voltage Pentode - Remote Cutoff (single)
- Base
- 7CC
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 12.6 V
- Heater current
- 0.15 A
Replacement tubes for HF93
The following tubes are recorded as possible replacements for HF93. This direction does not establish that HF93 can replace them.
Voltage Pentode - Remote Cutoff (single)
The database records 12BA6 as a possible replacement forHF93.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7CC |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where HF93 can be used as the replacement
In these recorded relationships, HF93 is the replacement tube. The listed original tubes are not automatically suitable as replacements for HF93.
Voltage Pentode - Sharp Cutoff (single)
The database records HF93 as a possible replacement for12AU6.
No special restrictions are recorded for this substitution.
| Specification | HF93 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7BK |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Voltage Pentode - Remote Cutoff (single)
The database records HF93 as a possible replacement for12BA6.
No special restrictions are recorded for this substitution.
| Specification | HF93 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7CC |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 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 HF93 specifications →