Tube cross-reference
Z803U alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the Z803U specialized - switching tube. Compare core specifications and verify every restriction before using a replacement.
Exact variations of Z803U
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
6779 Specialized - Thyratron
- Base
- Not recorded
- Socket
- Not recorded
- Base pins
- Not recorded
- Sections
- 1
- Heater voltage
- Not recorded
- Heater current
- Not recorded
Where Z803U can be used as the replacement
In these recorded relationships, Z803U is the replacement tube. The listed original tubes are not automatically suitable as replacements for Z803U.
Specialized - Thyratron
The database records Z803U as a possible replacement for6779.
No special restrictions are recorded for this substitution.
| Specification | Z803U replacement | Original tube |
|---|---|---|
| Tube type | Specialized - Switching Tube | Specialized - Thyratron |
| Construction | RelayControlSwitch | Thyratron |
| Base | Not recorded | Not recorded |
| Socket | B7G | Not recorded |
| Base pins | Not recorded | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | Not recorded | Not recorded |
| Heater current | Not recorded | Not recorded |
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 Z803U specifications →