Data set 01
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Anode-grid capacitance
<3 pF
Characteristic
Typical plate current
1 mA
Va=200V; Vg=-1.5V
Voltage - Triode (single) ·Triode
4657
Indirectly heated triode for low-frequency voltage amplification in audio and general electronic circuits.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 4 V / 1 A
Description
Indirectly heated triode for low-frequency voltage amplification.
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
- 4 V
- Nominal heater current
- 1 A
- 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
1 physical section, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 45000 Ω
- Transconductance
- 0.0022 S
- Amplification factor
- 99
- Max plate voltage
- 200 V
- Max plate dissipation
- 1.5 W
- Max cathode current
- 15 mA
Published Philips ratings and operating data promoted where applicable.
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.