Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 2
Pentode
Other
HeaterVoltageNominal
7 V
Nominal
HeaterCurrentNominal
320 mA
Nominal
Plate Voltage
250 V
ClassA
Screen Voltage
100 V
ClassA
Voltage Radio Detector Converter ·Diode-Diode-Pentode
7E7
Double-diode pentode combining radio detector and control-voltage rectification with RF, IF, or high-gain audio amplification, integrating multiple receiver signal-processing functions in one envelope.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- 8AE
- Socket code
- B8G
- Base pins
- 8
- Nominal heater
- 6.3 V / 300 mA
Description
A Lock-In double-diode pentode for RF/IF amplification and high-gain audio amplification; translated from the French source.
Socket description
Loctal 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8AE
- Socket code
- B8G
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
8AE - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
3 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Published promoted fields populated by semantic heading; identical repeated physical sections compressed.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 700000 Ω
- Transconductance
- 0.001575 S
- Max plate voltage
- 300 V
- Max screen voltage
- 100 V
- Max plate dissipation
- 2.5 W
- Max screen dissipation
- 0.3 W
Published promoted fields populated by semantic heading; identical repeated physical sections compressed.
Section 3
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Physical diode section added during 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.
Data set 02
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 2
Pentode
Capacitance
Input capacitance
4.6 pF
Section1
Output capacitance
4.6 pF
Section1
Grid-to-plate capacitance
0.005 pF
Section1
Other
Typical plate voltage
250 V
ClassA
Typical screen voltage
100 V
ClassA
Typical grid voltage
-3 V
ClassA
Typical plate current
7.5 mA
ClassA
Typical screen current
1.6 mA
ClassA
Characteristic
Plate resistance
700000 Ohm
Section1
Transconductance
1300 uS
Section1
Data set 03
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Diode
Capacitance
Grid To Plate Capacitance
0.005 pF
Pentode;Maximum
Diode1ToGridCapacitance
0.013 pF
Maximum
Diode2ToGridCapacitance
0.003 pF
Maximum