Tube cross-reference
DAC21 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the DAC21 voltage - triode (with diode, heptode or hexode). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for DAC21
The following tubes are recorded as possible replacements for DAC21. This direction does not establish that DAC21 can replace them.
Voltage Pentode or Tetrode (under 100V)
The database records 1S5 as a possible replacement forDAC21.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (with diode, heptode or hexode) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Diode-Triode | Diode-Pentode |
| Base | Not recorded | 6AU |
| Socket | Not recorded | B7G |
| Base pins | Not recorded | 7 |
| Sections | 2 | 2 |
| Heater voltage | 1.4 V | 1.4 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 DAC21 specifications →