Tube cross-reference
3HT6 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3HT6 voltage pentode - remote cutoff (single). Compare core specifications and verify every restriction before using a replacement.
Where 3HT6 can be used as the replacement
In these recorded relationships, 3HT6 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 3HT6.
Voltage Pentode - Remote Cutoff (single)
The database records 3HT6 as a possible replacement for3EH7.
- Not suitable for all circuits
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Remote Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9AQ |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 3HT6 as a possible replacement for3EJ7.
- Not suitable for all circuits
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | E9-1 |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 3HT6 as a possible replacement for3HM6.
No special restrictions are recorded for this substitution.
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 3HT6 as a possible replacement for3JC6.
No special restrictions are recorded for this substitution.
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.5 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 3HT6 as a possible replacement for3JC6A.
No special restrictions are recorded for this substitution.
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9PM |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.5 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Pentode - Sharp Cutoff (single)
The database records 3HT6 as a possible replacement for3JD6.
No special restrictions are recorded for this substitution.
| Specification | 3HT6 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode - Remote Cutoff (single) | Voltage Pentode - Sharp Cutoff (single) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 9PM |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.5 V |
| Heater current | 0.6 A | 0.6 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 3HT6 specifications →