Diode (NOT rectifier) ·Diode
D42
Osram single diode intended for detector and signal-rectification service in receiving equipment, with construction characteristic of early thermionic detector valves.
- Sections
- 1
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater
- 4 V / 600 mA
Description
D42: OSRAM diode valve. The complete approved OSRAM sheet was read for construction, characteristics, operating data, and application guidance.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater voltage
- 4 V
- Nominal heater current
- 600 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
1 physical section, each with unique specifications.
Section 1
Diode
- Rectifier nominal output current
- 15 mA
Published characteristics promoted where reliably identified; additional source values retained below.
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.