Tube cross-reference
DF61 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the DF61 voltage pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Where DF61 can be used as the replacement
In these recorded relationships, DF61 is the replacement tube. The listed original tubes are not automatically suitable as replacements for DF61.
Voltage Pentode or Tetrode (under 100V)
The database records DF61 as a possible replacement for6611.
No special restrictions are recorded for this substitution.
| Specification | DF61 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | WIRE8 | B5D |
| Base pins | 8 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.025 A | 0.02 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 DF61 specifications →