Tube cross-reference
HCC85 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the HCC85 voltage - dual triode (similar high frequency). Compare core specifications and verify every restriction before using a replacement.
Exact variations of HCC85
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.
17EW8 Voltage - Dual Triode (similar high frequency)
- Base
- Not recorded
- Socket
- B9A
- Base pins
- 9
- Sections
- 2
- Heater voltage
- 17.5 V
- Heater current
- 0.16 A
Replacement tubes for HCC85
The following tubes are recorded as possible replacements for HCC85. This direction does not establish that HCC85 can replace them.
Voltage - Dual Triode (similar high frequency)
The database records 17EW8 as a possible replacement forHCC85.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar high frequency) | Voltage - Dual Triode (similar high frequency) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 17.5 V | 17.5 V |
| Heater current | 0.16 A | 0.16 A |
Where HCC85 can be used as the replacement
In these recorded relationships, HCC85 is the replacement tube. The listed original tubes are not automatically suitable as replacements for HCC85.
Voltage - Dual Triode (similar high frequency)
The database records HCC85 as a possible replacement for17EW8.
No special restrictions are recorded for this substitution.
| Specification | HCC85 replacement | Original tube |
|---|---|---|
| Tube type | Voltage - Dual Triode (similar high frequency) | Voltage - Dual Triode (similar high frequency) |
| Construction | Triode-Triode | Triode-Triode |
| Base | Not recorded | Not recorded |
| Socket | B9A | B9A |
| Base pins | 9 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 17.5 V | 17.5 V |
| Heater current | 0.16 A | 0.16 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 HCC85 specifications →