Tube cross-reference
18GB5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 18GB5 power - tv horizontal output (sweep). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 18GB5
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.
LL500 Power - TV Horizontal Output (sweep)
- Base
- 9NH
- Socket
- B9E
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 18 V
- Heater current
- 0.45 A
Where 18GB5 can be used as the replacement
In these recorded relationships, 18GB5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 18GB5.
Power - TV Horizontal Output (sweep)
The database records 18GB5 as a possible replacement forLL500.
No special restrictions are recorded for this substitution.
| Specification | 18GB5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Horizontal Output (sweep) | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | 9NH | 9NH |
| Socket | B9A | B9E |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 18 V | 18 V |
| Heater current | 0.45 A | 0.45 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 18GB5 specifications →