Tube cross-reference
DL93 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the DL93 power - pentode single (not beam) (under 10w). Compare core specifications and verify every restriction before using a replacement.
Exact variations of DL93
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.
3A4 Power - Pentode Single (NOT beam) (under 10W)
- Base
- 7B8
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 1.4 V
- Heater current
- 0.2 A
Replacement tubes for DL93
The following tubes are recorded as possible replacements for DL93. This direction does not establish that DL93 can replace them.
Power - Pentode Single (NOT beam) (under 10W)
The database records 3A4 as a possible replacement forDL93.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Miniature | 7B8 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.2 A | 0.2 A |
Where DL93 can be used as the replacement
In these recorded relationships, DL93 is the replacement tube. The listed original tubes are not automatically suitable as replacements for DL93.
Power - Pentode Single (NOT beam) (under 10W)
The database records DL93 as a possible replacement for3A4.
No special restrictions are recorded for this substitution.
| Specification | DL93 replacement | Original tube |
|---|---|---|
| Tube type | Power - Pentode Single (NOT beam) (under 10W) | Power - Pentode Single (NOT beam) (under 10W) |
| Construction | Pentode | Pentode |
| Base | Miniature | 7B8 |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.2 A | 0.2 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 DL93 specifications →