Tube cross-reference
PC86 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the PC86 voltage - triode (single high frequency). Compare core specifications and verify every restriction before using a replacement.
Exact variations of PC86
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.
4CM4 Voltage - Triode (single high frequency)
- Base
- Not recorded
- Socket
- B9A
- Base pins
- 9
- Sections
- 1
- Heater voltage
- 4 V
- Heater current
- 0.3 A
Replacement tubes for PC86
The following tubes are recorded as possible replacements for PC86. This direction does not establish that PC86 can replace them.
Voltage - Triode (single high frequency)
The database records 4CM4 as a possible replacement forPC86.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Triode (single high frequency) | Voltage - Triode (single high frequency) |
| Construction | Triode | Triode |
| Base | NOVAL | Not recorded |
| Socket | B9A | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.8 V | 4 V |
| Heater current | 0.3 A | 0.3 A |
Where PC86 can be used as the replacement
In these recorded relationships, PC86 is the replacement tube. The listed original tubes are not automatically suitable as replacements for PC86.
Voltage - Triode (single high frequency)
The database records PC86 as a possible replacement for4CM4.
No special restrictions are recorded for this substitution.
| Specification | PC86 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Triode (single high frequency) | Voltage - Triode (single high frequency) |
| Construction | Triode | Triode |
| Base | NOVAL | Not recorded |
| Socket | B9A | B9A |
| Base pins | 7 | 9 |
| Sections | 1 | 1 |
| Heater voltage | 3.8 V | 4 V |
| Heater current | 0.3 A | 0.3 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 PC86 specifications →