Tube cross-reference
1LF3 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1LF3 voltage - triode (single). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 1LF3
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.
1LE3 Voltage - Triode (single)
- Base
- 4AA
- Socket
- B8G
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 1.4 V
- Heater current
- 0.05 A
Replacement tubes for 1LF3
The following tubes are recorded as possible replacements for 1LF3. This direction does not establish that 1LF3 can replace them.
Voltage - Triode (single)
The database records 1LE3 as a possible replacement for1LF3.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | 4AA | 4AA |
| Socket | Not recorded | B8G |
| Base pins | 4 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Where 1LF3 can be used as the replacement
In these recorded relationships, 1LF3 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1LF3.
Voltage - Triode (single)
The database records 1LF3 as a possible replacement for1LE3.
No special restrictions are recorded for this substitution.
| Specification | 1LF3 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (single) | Voltage - Triode (single) |
| Construction | Triode | Triode |
| Base | 4AA | 4AA |
| Socket | Not recorded | B8G |
| Base pins | 4 | 8 |
| Sections | 1 | 1 |
| 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 1LF3 specifications →