Data set 01
1961 Ferranti Technical Handbook
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
Wide-band RF amplifier
Other
Maximum useful frequency
400 MHz
Voltage Pentode - High Frequency (single) ·Pentode
DP61
High-transconductance RF pentode designed for wide-band high-frequency amplifier service to approximately 400 MHz. Ferranti documentation identifies it as a broadband signal tube for demanding RF amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 6.3 V / 175 mA
Description
High-transconductance RF pentode for wide-band high-frequency amplifier service to about 400 MHz.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 175 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
Pentode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0051 S
- Max plate voltage
- 180 V
- Max screen voltage
- 140 V
- Max plate dissipation
- 1.7 W
Published Ferranti ratings and characteristics promoted where applicable; additional operating and application data retained as parameters.
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.