Data set 01
1938 Raytheon
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Application
ClassA_VHF_RF_Amplifier text
Voltage Dual Pentode ·Pentode-Pentode
5970
Directly heated subminiature dual remote-cutoff pentode designed for Class-A VHF radio-frequency amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- SUBMINIATURE8
- Base pins
- 8
- Nominal heater
- 1.25 V / 160 mA
Description
Directly heated subminiature dual remote-cutoff pentode for Class A VHF RF amplification.
Socket description
Subminiature 8-lead base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- SUBMINIATURE8
- Base pins
- 8
- Nominal heater voltage
- 1.25 V
- Nominal heater current
- 160 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
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 170000 Ω
- Transconductance
- 0.00185 S
- Max cathode current
- 5 mA
Representative section for two similar remote-cutoff pentodes.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 170000 Ω
- Transconductance
- 0.00185 S
- Max cathode current
- 5 mA
Second physical remote-cutoff pentode section restored under one-row-per-physical-section policy; identical to section 1.
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.