Tube cross-reference
XCF80 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the XCF80 voltage radio detector converter. Compare core specifications and verify every restriction before using a replacement.
Exact variations of XCF80
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.
4BL8 Voltage Radio Detector Converter
- Base
- 9DC
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 4.6 V
- Heater current
- 0.6 A
Replacement tubes for XCF80
The following tubes are recorded as possible replacements for XCF80. This direction does not establish that XCF80 can replace them.
Voltage Radio Detector Converter
The database records 4BL8 as a possible replacement forXCF80.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DC | 9DC |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 4.6 V |
| Heater current | 0.3 A | 0.6 A |
Where XCF80 can be used as the replacement
In these recorded relationships, XCF80 is the replacement tube. The listed original tubes are not automatically suitable as replacements for XCF80.
Voltage Radio Detector Converter
The database records XCF80 as a possible replacement for4BL8.
No special restrictions are recorded for this substitution.
| Specification | XCF80 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DC | 9DC |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 4.6 V |
| Heater current | 0.3 A | 0.6 A |
Voltage Radio Detector Converter
The database records XCF80 as a possible replacement for5EA8.
No special restrictions are recorded for this substitution.
| Specification | XCF80 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DC | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 4.7 V |
| Heater current | 0.3 A | 0.6 A |
Voltage Radio Detector Converter
The database records XCF80 as a possible replacement for5U8.
No special restrictions are recorded for this substitution.
| Specification | XCF80 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Radio Detector Converter | Voltage Radio Detector Converter |
| Construction | Pentode-Triode | Pentode-Triode |
| Base | 9DC | 9AE |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 5 V |
| Heater current | 0.3 A | 0.6 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 XCF80 specifications →