Tube cross-reference
1B3GT alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1B3GT rectifier - tv line scan boost. Compare core specifications and verify every restriction before using a replacement.
Exact variations of 1B3GT
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.
1G3GT Rectifier - TV Line Scan Boost
- Base
- Not recorded
- Socket
- IO
- Base pins
- 8
- Sections
- 1
- Heater voltage
- 1.25 V
- Heater current
- 0.2 A
Replacement tubes for 1B3GT
The following tubes are recorded as possible replacements for 1B3GT. This direction does not establish that 1B3GT can replace them.
Rectifier - TV Line Scan Boost
The database records DY30 as a possible replacement for1B3GT.
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 | 3C | Octal |
| Socket | IO | Not recorded |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records U41 as a possible replacement for1B3GT.
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 | 3C | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1AU3 as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | OCTAL7 |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1G3GT as a possible replacement for1B3GT.
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 | 3C | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1J3 as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | IO |
| Base pins | 8 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1J3A as a possible replacement for1B3GT.
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 | 3C | Not recorded |
| Socket | IO | B7G |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | Not recorded |
| Heater current | 0.2 A | Not recorded |
Rectifier - TV Line Scan Boost
The database records 1K3 as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | IO |
| Base pins | 8 | 6 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1K3A as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | IO |
| Base pins | 8 | 8 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1N2 as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | OCTAL7 |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1N2A as a possible replacement for1B3GT.
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 | 3C | 3C |
| Socket | IO | OCTAL7 |
| Base pins | 8 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Where 1B3GT can be used as the replacement
In these recorded relationships, 1B3GT is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1B3GT.
Rectifier - TV Line Scan Boost
The database records 1B3GT as a possible replacement forDY30.
No special restrictions are recorded for this substitution.
| Specification | 1B3GT replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | 3C | Octal |
| Socket | IO | Not recorded |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 V |
| Heater current | 0.2 A | 0.2 A |
Rectifier - TV Line Scan Boost
The database records 1B3GT as a possible replacement forU41.
No special restrictions are recorded for this substitution.
| Specification | 1B3GT replacement | Original tube |
|---|---|---|
| Tube type | Rectifier - TV Line Scan Boost | Rectifier - TV Line Scan Boost |
| Construction | Rectifier | Rectifier |
| Base | 3C | Not recorded |
| Socket | IO | IO |
| Base pins | 8 | Not recorded |
| Sections | 1 | 1 |
| Heater voltage | 1.25 V | 1.25 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 1B3GT specifications →