Data set 01
1963 Hitachi
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Interelectrode capacitances published
1
See source table
Power - Pentode Single (NOT beam) (under 10W) ·Pentode
4MP12
Hitachi power pentode with approximately 8.5 W plate dissipation for substantial output-amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- E7-1
- Socket code
- B7G
- Base pins
- 7
- Nominal heater
- 4.7 V / 600 mA
Description
Power pentode for audio-output stages of transformer-less television receivers.
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
- 4.7 V
- Nominal heater current
- 600 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
- 100000 Ω
- Transconductance
- 0.0055 S
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 8.5 W
- Max screen dissipation
- 2.5 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.