Tube cross-reference
DF703 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the DF703 voltage pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Where DF703 can be used as the replacement
In these recorded relationships, DF703 is the replacement tube. The listed original tubes are not automatically suitable as replacements for DF703.
Voltage Pentode
The database records DF703 as a possible replacement for5886.
No special restrictions are recorded for this substitution.
| Specification | DF703 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode |
| Construction | Pentode | Pentode |
| Base | Not recorded | Not recorded |
| Socket | WIRE8 | Not recorded |
| Base pins | 8 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.01 A | 0.01 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 DF703 specifications →