Tube cross-reference
5660 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5660 voltage pentode or tetrode (with diode). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5660
The following tubes are recorded as possible replacements for 5660. This direction does not establish that 5660 can replace them.
Voltage Radio Detector Converter
The database records 12C8 as a possible replacement for5660.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (with diode) | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | 8E |
| Socket | Not recorded | Not recorded |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| Heater voltage | 12.6 V | 12.6 V |
| Heater current | 0.15 A | 0.15 A |
Where 5660 can be used as the replacement
In these recorded relationships, 5660 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5660.
Voltage Radio Detector Converter
The database records 5660 as a possible replacement for12C8.
No special restrictions are recorded for this substitution.
| Specification | 5660 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (with diode) | Voltage Radio Detector Converter |
| Construction | Diode-Diode-Pentode | Diode-Diode-Pentode |
| Base | Not recorded | 8E |
| Socket | Not recorded | Not recorded |
| Base pins | 8 | 8 |
| Sections | 3 | 3 |
| 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 5660 specifications →