Tube cross-reference
5CR8 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5CR8 voltage triode pentode. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5CR8
The following tubes are recorded as possible replacements for 5CR8. This direction does not establish that 5CR8 can replace them.
Voltage Triode Pentode
The database records 5CM8 as a possible replacement for5CR8.
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DA | 9DZ |
| 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 |
Power - Beam (NOT sweep)
The database records 5KZ8 as a possible replacement for5CR8.
- Not suitable for all circuits
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Beam (NOT sweep) |
| Construction | Pentode-Triode | BeamPower-Triode |
| Base | 9DA | Not recorded |
| Socket | B9A | Not recorded |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 4.7 V | 5 V |
| Heater current | 0.6 A | 0.6 A |
Where 5CR8 can be used as the replacement
In these recorded relationships, 5CR8 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5CR8.
Voltage Triode Pentode
The database records 5CR8 as a possible replacement for5CM8.
- Not suitable for all circuits
| Specification | 5CR8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Voltage Triode Pentode |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DA | 9DZ |
| 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 |
Power - Beam (NOT sweep)
The database records 5CR8 as a possible replacement for5KZ8.
- Not suitable for all circuits
| Specification | 5CR8 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Triode Pentode | Power - Beam (NOT sweep) |
| Construction | Pentode-Triode | BeamPower-Triode |
| Base | 9DA | Not recorded |
| Socket | B9A | Not recorded |
| 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 5CR8 specifications →