Tube cross-reference
3DB3 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 3DB3 rectifier - tv line scan boost. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 3DB3
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.
3CY3 Rectifier - TV Line Scan Boost
- Base
- Not recorded
- Socket
- IO
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 3.15 V
- Heater current
- 0.245 A
Replacement tubes for 3DB3
The following tubes are recorded as possible replacements for 3DB3. This direction does not establish that 3DB3 can replace them.
Rectifier - TV Line Scan Boost
The database records 3DJ3 as a possible replacement for3DB3.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 8MX |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.3 A |
Where 3DB3 can be used as the replacement
In these recorded relationships, 3DB3 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 3DB3.
Rectifier - TV Line Scan Boost
The database records 3DB3 as a possible replacement for3A3.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 8EZ |
| Socket | IO | Not recorded |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.22 A |
Rectifier - TV Line Scan Boost
The database records 3DB3 as a possible replacement for3A3A.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | Not recorded |
| Socket | IO | OCTAL6 |
| Base pins | 8 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.22 A |
Rectifier - Damper Diode
The database records 3DB3 as a possible replacement for3AW3.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - Damper Diode |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 8EZ |
| Socket | IO | OCTAL6 |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.6 A |
Rectifier - Half Wave
The database records 3DB3 as a possible replacement for3B2.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - Half Wave |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | Not recorded |
| Socket | IO | Not recorded |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.22 A |
Rectifier - TV Line Scan Boost
The database records 3DB3 as a possible replacement for3CY3.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 A | 0.245 A |
Rectifier - TV Line Scan Boost
The database records 3DB3 as a possible replacement for3DJ3.
No special restrictions are recorded for this substitution.
| Specification | 3DB3 replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | Not recorded | 8MX |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 3.15 V | 3.15 V |
| Heater current | 0.245 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 3DB3 specifications →