Diode (NOT rectifier) ·Diode-Diode
20D1
Twin diode with separate cathodes for paired detector, discriminator, or control-voltage rectification functions in series-fed receiving equipment.
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 9.5 V / 200 mA
Description
Double diode with separate cathodes for series operation.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 9.5 V
- Nominal heater current
- 200 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Diode
- Rectifier peak inverse voltage
- 500 V
- Rectifier nominal output current
- 9 mA
- Rectifier peak forward current
- 50 mA
Section 2
Diode
No fixed ratings are recorded for this section.
Second physical diode section added in approved section-structure reconciliation.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.