Tube cross-reference
6535 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 6535 specialized - gauge tube. Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for 6535
The following tubes are recorded as possible replacements for 6535. This direction does not establish that 6535 can replace them.
Power - Triode Single (under 10W)
The database records ECC91 as a possible replacement for6535.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Specialized - Gauge Tube | Power - Triode Single (under 10W) |
| Construction | Gauge | Triode-Triode |
| Base | 8FR | Miniature |
| Socket | Not recorded | B7G |
| Base pins | 8 | 7 |
| Sections | 1 | 2 |
| Heater voltage | Not recorded | 6.3 V |
| Heater current | 0.017 A | 0.45 A |
Voltage - Dual Triode (similar high frequency)
The database records M8081 as a possible replacement for6535.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Specialized - Gauge Tube | Voltage - Dual Triode (similar high frequency) |
| Construction | Gauge | Triode-Triode |
| Base | 8FR | Not recorded |
| Socket | Not recorded | Not recorded |
| Base pins | 8 | Not recorded |
| Sections | 1 | 2 |
| Heater voltage | Not recorded | 6.3 V |
| Heater current | 0.017 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 6535 specifications →