Data set 01
1936 Cossor Valve Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Optimum load
17000 ohm
Published datasheet value
Voltage Pentode ·Pentode
220HPT
Cossor receiving pentode intended for receiver and amplifier service; available source does not clearly support a narrower functional category.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater
- 2 V / 200 mA
Description
Cossor 220HPT pentode for receiver/amplifier service as specified in the supplied catalogue datasheet.
Socket description
European 5-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B5
- Base pins
- 5
- Nominal heater voltage
- 2 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
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.0025 S
- Max plate voltage
- 150 V
- Max screen voltage
- 150 V
Published ratings and characteristics promoted from approved datasheet.
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.