Tube cross-reference
5678 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 5678 voltage - pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 5678
The following tubes are recorded as possible replacements for 5678. This direction does not establish that 5678 can replace them.
Voltage - Pentode or Tetrode (under 100V)
The database records DF60 as a possible replacement for5678.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Pentode or Tetrode (under 100V) | Voltage - Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | 1AD4 | Not recorded |
| Socket | B5D | WIRE8 |
| Base pins | 5 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.05 A | 0.05 A |
Where 5678 can be used as the replacement
In these recorded relationships, 5678 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 5678.
Voltage - Pentode or Tetrode (under 100V)
The database records 5678 as a possible replacement forDF60.
No special restrictions are recorded for this substitution.
| Specification | 5678 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Pentode or Tetrode (under 100V) | Voltage - Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | 1AD4 | Not recorded |
| Socket | B5D | WIRE8 |
| Base pins | 5 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.05 A | 0.05 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 5678 specifications →