Tube cross-reference
1R5 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 1R5 voltage pentode or tetrode (under 100v). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 1R5
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.
DK91 Voltage Pentode or Tetrode (under 100V)
- Base
- B7G
- Socket
- B7G
- Base pins
- 7
- Sections
- 1
- Heater voltage
- 1.4 V
- Heater current
- 0.05 A
Replacement tubes for 1R5
The following tubes are recorded as possible replacements for 1R5. This direction does not establish that 1R5 can replace them.
Voltage Radio Detector Converter
The database records 1C1 as a possible replacement for1R5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 7AT | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Voltage Pentode or Tetrode (under 100V)
The database records 1H33 as a possible replacement for1R5.
- Parallel heater circuits only
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Heptode | Heptode |
| Base | 7AT | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.025 A |
Voltage Pentode or Tetrode (under 100V)
The database records DK91 as a possible replacement for1R5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Heptode | Heptode |
| Base | 7AT | B7G |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Voltage Radio Detector Converter
The database records 1R5WA as a possible replacement for1R5.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 7AT | 7AT |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.25 V |
| Heater current | 0.05 A | 0.05 A |
Where 1R5 can be used as the replacement
In these recorded relationships, 1R5 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 1R5.
Voltage Radio Detector Converter
The database records 1R5 as a possible replacement for1C1.
No special restrictions are recorded for this substitution.
| Specification | 1R5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Radio Detector Converter |
| Construction | Heptode | Heptode |
| Base | 7AT | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 A |
Voltage Pentode or Tetrode (under 100V)
The database records 1R5 as a possible replacement for1H33.
- Parallel heater circuits only
| Specification | 1R5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Heptode | Heptode |
| Base | 7AT | Not recorded |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.025 A |
Voltage Pentode or Tetrode (under 100V)
The database records 1R5 as a possible replacement forDK91.
No special restrictions are recorded for this substitution.
| Specification | 1R5 replacement | Original tube |
|---|---|---|
| Tube type | Voltage Pentode or Tetrode (under 100V) | Voltage Pentode or Tetrode (under 100V) |
| Construction | Heptode | Heptode |
| Base | 7AT | B7G |
| Socket | B7G | B7G |
| Base pins | 7 | 7 |
| Sections | 1 | 1 |
| Heater voltage | 1.4 V | 1.4 V |
| Heater current | 0.05 A | 0.05 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 1R5 specifications →