Data set 01
1962 Eimac
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Heater Current
1.2 A to 1.4 A
Power - Triode (over 1000V 100W) ·Triode
8403
High-current triode for specialized electronic service. Available source material does not establish a narrower functional application confidently.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 1.25 A
Description
The Eimac 8403 is a rugged metal-ceramic planar triode for CW and pulsed oscillator, amplifier, frequency-multiplier, pulse-modulator, and pulse-amplifier service.
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
- 6.3 V
- Nominal heater current
- 1.25 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
- Amplification factor
- 80
- Max plate voltage
- 2500 V
- Max plate dissipation
- 100 W
- Max grid dissipation
- 2 W
- Max cathode current
- 150 mA
General characteristics and applicable CW/pulsed maximum ratings promoted semantically.
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
1971 Machlette Laboratories
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Amplification factor
80
Other
Maximum plate voltage
2000 V
Maximum plate dissipation
100 W
Maximum grid dissipation
2 W
Maximum pulse/cathode current
190 mA