Data set 01
1959 Rogers
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
30 V
HeaterOrFilamentCurrent
150 mA
Power - Pentode Single (NOT beam) (under 10W) ·Pentode
30A5
Power/output pentode designed for Class-A, single-ended, or push-pull audio-frequency output amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- E7-1
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 30 V / 150 mA
Description
Output pentode for receivers operating from low mains voltages.
Socket description
Miniature 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- E7-1
- Socket code
- B7G
- Base pins
- 7
- Nominal heater voltage
- 30 V
- Nominal heater current
- 150 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
E7-1 - 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
- Plate resistance
- 22000 Ω
- Transconductance
- 0.0092 S
- Max plate voltage
- 150 V
- Max screen voltage
- 150 V
- Max plate dissipation
- 7.5 W
- Max screen dissipation
- 1.5 W
- Max cathode current
- 100 mA
Published ratings and characteristics promoted from the supplied Rogers/Rogers Majestic source.
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
1963 Hitachi
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Interelectrode capacitances published
1
See source table