Data set 01
1999 Philips E-Z
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Normal plate current
28 mA
Grid bias
-30 V
Power - Pentode (NOT beam) ·Pentode
E443
Power/output pentode designed for audio-frequency power amplification in single-ended or push-pull output stages.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater
- 4 V / 900 mA
Description
E443 is a directly heated high-power output pentode. The supplied Philips datasheet was read for heater data, construction, ratings, characteristic constants, operating conditions, and capacitances where published.
Socket description
European 4-pin base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B4
- Base pins
- 4
- Nominal heater voltage
- 4 V
- Nominal heater current
- 900 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
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 33000 Ω
- Transconductance
- 0.0018 S
- Amplification factor
- 60
- Max plate voltage
- 400 V
- Max screen voltage
- 300 V
- Max plate dissipation
- 12 W
Directly heated high-power output pentode
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.