Tube cross-reference
D77 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the D77 diode (not rectifier). Compare core specifications and verify every restriction before using a replacement.
Replacement tubes for D77
The following tubes are recorded as possible replacements for D77. This direction does not establish that D77 can replace them.
Diode (NOT rectifier)
The database records 6AL5 as a possible replacement forD77.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | B7G | E7-1 |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Where D77 can be used as the replacement
In these recorded relationships, D77 is the replacement tube. The listed original tubes are not automatically suitable as replacements for D77.
Diode (NOT rectifier)
The database records D77 as a possible replacement for5726.
No special restrictions are recorded for this substitution.
| Specification | D77 replacement | Original tube |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | B7G | E7-1 |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Diode (NOT rectifier)
The database records D77 as a possible replacement for6058.
No special restrictions are recorded for this substitution.
| Specification | D77 replacement | Original tube |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | B7G | 6BT |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Diode (NOT rectifier)
The database records D77 as a possible replacement for6AL5.
No special restrictions are recorded for this substitution.
| Specification | D77 replacement | Original tube |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | B7G | E7-1 |
| Socket | Not recorded | B7G |
| Base pins | 7 | 7 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 A | 0.3 A |
Diode (NOT rectifier)
The database records D77 as a possible replacement for6EB5.
No special restrictions are recorded for this substitution.
| Specification | D77 replacement | Original tube |
|---|---|---|
| Tube type | Diode (NOT rectifier) | Diode (NOT rectifier) |
| Construction | Diode-Diode | Diode-Diode |
| Base | B7G | 6BT |
| Socket | Not recorded | Not recorded |
| Base pins | 7 | 9 |
| Sections | 2 | 2 |
| Heater voltage | 6.3 V | 6.3 V |
| Heater current | 0.3 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 D77 specifications →