Data set 01
1961 Ferranti Technical Handbook
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
Maximum resonant frequency
700 MHz
Application
Application
HF detector / half-wave rectifier
Diode (NOT rectifier) ·Diode-Diode
DD6
Miniature double diode with separate cathodes for high-frequency detector and half-wave rectifier service, with resonance extending to approximately 700 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 300 mA
Description
Miniature double diode with separate cathodes for high-frequency detector and rectifier service.
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
- 6.3 V
- Nominal heater current
- 300 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
X-ray radiationInterelectrode capacitances
- Rectifier peak forward current
- 54 mA
Two similar diode sections; represented once under identical-section compression.
Section 2
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Missing 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.