Tube cross-reference
5GH8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5GH8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 5GH8
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.
5EA8 Voltage Radio Detector Converter
- Base
- 9AE
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 4.7 V
- Heater current
- 0.6 A
Replacement tubes for 5GH8
The following tubes are recorded as possible replacements for 5GH8. This direction does not establish that 5GH8 can replace them.
Voltage Radio Detector Converter
The database records 5EA8 as a possible replacement for5GH8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 4.7 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Triode Pentode
The database records 5GH8A as a possible replacement for5GH8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 4.7 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Radio Detector Converter
The database records 5U8 as a possible replacement for5GH8.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 5 V |
| Heater current | 0.6 A | 0.6 A |
Where 5GH8 can be used as the replacement
In these recorded relationships, 5GH8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5GH8.
Voltage Radio Detector Converter
The database records 5GH8 as a possible replacement for5EA8.
No special restrictions are recorded for this substitution.
| Specification | 5GH8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 4.7 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Triode Pentode
The database records 5GH8 as a possible replacement for5GH8A.
No special restrictions are recorded for this substitution.
| Specification | 5GH8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 4.7 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Triode Pentode
The database records 5GH8 as a possible replacement for5MQ8.
- Not suitable for all circuits
| Specification | 5GH8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9FA |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 5.6 V |
| Heater current | 0.6 A | 0.6 A |
Voltage Radio Detector Converter
The database records 5GH8 as a possible replacement for5U8.
No special restrictions are recorded for this substitution.
| Specification | 5GH8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9AE | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 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 5GH8 specifications →