Tube cross-reference
DL98 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the DL98 voltage pentode. Compare core specifications and verify every restriction before using a replacement.
Exact variations of DL98
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.
3B4 Power - Pentode Single (NOT beam) (under 10W)
- Base
- 7CY
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 1.25 V
- Heater current
- 0.33 A
Replacement tubes for DL98
The following tubes are recorded as possible replacements for DL98. This direction does not establish that DL98 can replace them.
Power - Pentode Single (NOT beam) (under 10W)
The database records 3B4 as a possible replacement forDL98.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7CY |
| Socket | WIRE8 | B7G |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.33 A | 0.33 A |
Where DL98 can be used as the replacement
In these recorded relationships, DL98 is the replacement tube. The listed original tubes are not automatically suitable as replacements for DL98.
Power - Pentode Single (NOT beam) (under 10W)
The database records DL98 as a possible replacement for3B4.
No special restrictions are recorded for this substitution.
| Specification | DL98 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Not recorded | 7CY |
| Socket | WIRE8 | B7G |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.33 A | 0.33 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 DL98 specifications →