Data set 01
1962 Eimac
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Peak Positive Plate Voltage
25000 V
PulseModulator
Power - Tetrode (NOT beam) ·Tetrode
8252
High-vacuum power tetrode designed specifically for pulse-modulator service with inductive or resistive loads, rated for 20 kV plate voltage and 18 A peak plate current.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 26 V / 2.1 A
Description
The EIMAC 8252 is a high-vacuum pulse-modulator tetrode for inductive or resistive load circuits, rated for 20 kV dc plate voltage and 18 A peak plate current.
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
- 26 V
- Nominal heater current
- 2.1 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
Tetrode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 20000 V
- Max screen voltage
- 1500 V
- Max plate dissipation
- 60 W
- Max screen dissipation
- 8 W
- Max grid dissipation
- 1 W
- Max cathode current
- 18 A
Promoted ratings mapped semantically from printed characteristics/maximum-ratings tables; remaining published electrical and operating-condition data retained densely in TUBE_SECTION_PARAMETER.
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
1965 Eimac Tube Manual
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
Heater Voltage Range
23.4 to 28.6 V
Other
Peak Positive Plate Voltage Maximum
25000 V
Peak Positive Grid Voltage Maximum
600 V
Typical Pulse Plate Current
10 A
Typical Pulse Output Power
300000 W
Duty Typical
0.0025