Tube cross-reference
27GB5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 27GB5 power - tv horizontal output (sweep). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 27GB5
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.
Replacement tubes for 27GB5
The following tubes are recorded as possible replacements for 27GB5. This direction does not establish that 27GB5 can replace them.
Power - TV Horizontal Output (sweep)
The database records PL500 as a possible replacement for27GB5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - TV Horizontal Output (sweep) | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | 9NH | 9NH |
| Socket | B9D | B9D |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 27 V | 27 V |
| Heater current | 0.3 A | 0.285 A |
Where 27GB5 can be used as the replacement
In these recorded relationships, 27GB5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 27GB5.
Power - TV Horizontal Output (sweep)
The database records 27GB5 as a possible replacement forPL500.
No special restrictions are recorded for this substitution.
| Specification | 27GB5 replacement | Original tube |
|---|---|---|
| Tube type | Power - TV Horizontal Output (sweep) | Power - TV Horizontal Output (sweep) |
| Construction | BeamPower | BeamPower |
| Base | 9NH | 9NH |
| Socket | B9D | B9D |
| Base pins | 9 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 27 V | 27 V |
| Heater current | 0.3 A | 0.285 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 27GB5 specifications →