Data set 01
1970 Sylvania Technical Manual
Published operating points and test conditions from this source.
SECTION 1
Diode
Other
Diode Plate Current Maximum
3 mA
SECTION 2
Pentode
Characteristics
Plate Current
9 mA
Screen Current
3.5 mA
Voltage Pentode or Tetrode (with diode) ·Diode-Pentode
20EQ7
Diode and sharp-cutoff pentode for detection and IF amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 20 V / 100 mA
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
- 20 V
- Nominal heater current
- 100 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
No fixed ratings are recorded for this section.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 250000 Ω
- Transconductance
- 0.0038 S
- Max plate voltage
- 300 V
- Max plate dissipation
- 3 W
- Max screen dissipation
- 0.6 W
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.