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Power - Triode (over 1000V 100W) ·Triode

3R202S

Water-cooled industrial power triode specially designed for industrial heating and high-power RF oscillator service. Its 6 kW plate-dissipation rating supports approximately 11–12 kW class-C output under published conditions.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5 V / 115 A

Description

The 3R202S is a water-cooled industrial triode specially designed for industrial heating applications and high-power RF oscillator 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
5 V
Nominal heater current
115 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
12
Max plate voltage
7000 V
Max plate dissipation
6000 W
Max grid dissipation
280 W

Published maximum ratings and characteristics audited; remaining values retained densely in parameter table.

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 01

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Filament voltage [1]

    5 V

    Filament voltage 5+ 5% v

  • Filament voltage [2]

    5 V

    Filament voltage 5+ 5% v

  • Filament current (nominal)

    115 A

    Filament current (nominal) 115 A

  • Mutual conductance (at Va = [1]

    2 mA/V

    Mutual conductance (at Va = 2kV, Vg = —75V) K} mA/vV

  • Mutual conductance (at Va = [2]

    -75 mA/V

    Mutual conductance (at Va = 2kV, Vg = —75V) K} mA/vV

  • Grid to anode

    30

    Grid to anode 30 pF

  • Grid to filament

    60

    Grid to filament 60 pF

  • Anode to filament [1]

    1

    Anode to filament 1-5 pF

  • Anode to filament [2]

    -5

    Anode to filament 1-5 pF

  • Published value [1]

    214

    214-LVA-001A Filament connector, smaller

  • Published value [2]

    1

    214-LVA-001A Filament connector, smaller

  • Published value [1]

    214

    214-LVA-001B Filament connector, larger

  • Published value [2]

    1

    214-LVA-001B Filament connector, larger

  • Published value [1]

    214

    214-LVA-001C Grid connector

  • Published value [2]

    1

    214-LVA-001C Grid connector

  • direct voltage plus ripple)

    7 V

    direct voltage plus ripple) 7 kY

  • Maximum direct anode current

    3 mA

    Maximum direct anode current 3 A

  • Maximum direct anode dissipation (continuous)

    6 kW

    Maximum direct anode dissipation (continuous) 6 kw

  • Maximum direct grid dissipation (continuous)

    280 W

    Maximum direct grid dissipation (continuous) 280 w

  • Maximum direct grid current (Note [1]

    1 mA

    Maximum direct grid current (Note 1) 700 mA

  • Maximum direct grid current (Note [2]

    700 mA

    Maximum direct grid current (Note 1) 700 mA

  • Maximum negative grid bias [1]

    -1

    Maximum negative grid bias —1 500 v

  • Maximum negative grid bias [2]

    500

    Maximum negative grid bias —1 500 v

  • Maximum frequency for above ratings

    50 MHz

    Maximum frequency for above ratings 50 MHz

  • Note

    1 W

    Note 1.—This figure is given for guidance. Grid dissipation is absolute rating.

  • Direct anode voltage [1]

    6 kV

    Direct anode voltage 6 65 kV

  • Direct anode voltage [2]

    65 kV

    Direct anode voltage 6 65 kV

  • Direct grid voltage [1]

    -670 V

    Direct grid voltage —670 —770 v

  • Direct grid voltage [2]

    -770 V

    Direct grid voltage —670 —770 v

  • Direct anode current [1]

    2 A

    Direct anode current 2-5 3 A

  • Direct anode current [2]

    -5 A

    Direct anode current 2-5 3 A

  • Direct anode current [3]

    3 A

    Direct anode current 2-5 3 A

  • Peak r.f. grid voltage [1]

    950 V

    Peak r.f. grid voltage 950 1050 v

  • Peak r.f. grid voltage [2]

    1050 V

    Peak r.f. grid voltage 950 1050 v

  • Direct grid current (Note [1]

    2 mA

    Direct grid current (Note 2) 450 (650) 350 (500) mA

  • Direct grid current (Note [2]

    450 mA

    Direct grid current (Note 2) 450 (650) 350 (500) mA

  • Direct grid current (Note [3]

    650 mA

    Direct grid current (Note 2) 450 (650) 350 (500) mA

  • Direct grid current (Note [4]

    350 mA

    Direct grid current (Note 2) 450 (650) 350 (500) mA

  • Direct grid current (Note [5]

    500 mA

    Direct grid current (Note 2) 450 (650) 350 (500) mA

  • Grid dissipation (Note [1]

    2 W

    Grid dissipation (Note 2) 140 115 wW

  • Grid dissipation (Note [2]

    140 W

    Grid dissipation (Note 2) 140 115 wW

  • Grid dissipation (Note [3]

    115 W

    Grid dissipation (Note 2) 140 115 wW

  • Grid resistor [1]

    1

    Grid resistor 1-5 22 kQ

  • Grid resistor [2]

    -5

    Grid resistor 1-5 22 kQ

  • Grid resistor [3]

    22

    Grid resistor 1-5 22 kQ

  • Power input [1]

    15 kW

    Power input 15 19-5 kW

  • Power input [2]

    19 kW

    Power input 15 19-5 kW

  • Power input [3]

    -5 kW

    Power input 15 19-5 kW

  • Output power (oscillator) [1]

    11 kW

    Output power (oscillator) 11-5 141 kw

  • Output power (oscillator) [2]

    -5 kW

    Output power (oscillator) 11-5 141 kw

  • Output power (oscillator) [3]

    141 kW

    Output power (oscillator) 11-5 141 kw

  • Power into load at [1]

    85 kW

    Power into load at 85 per cent transfer efficiency 10 12 kw

  • Power into load at [2]

    10 kW

    Power into load at 85 per cent transfer efficiency 10 12 kw

  • Power into load at [3]

    12 kW

    Power into load at 85 per cent transfer efficiency 10 12 kw

  • Maximum direct anode voltage

    7 kV

    Maximum direct anode voltage 7 kV

  • Maximum direct anode dissipation (intermittent)

    7 kW

    Maximum direct anode dissipation (intermittent) 7 kw

  • Maximum direct anode dissipation (continuous)

    6 kW

    Maximum direct anode dissipation (continuous) 6 kW

  • Maximum direct grid dissipation (continuous)

    280 W

    Maximum direct grid dissipation (continuous) 280 W

  • Maximum direct grid voltuge [1]

    -1 kV

    Maximum direct grid voltuge —1-5 kv

  • Maximum direct grid voltuge [2]

    -5 kV

    Maximum direct grid voltuge —1-5 kv

  • Direct anode voltage

    5 kV

    Direct anode voltage 5 kv

  • Direct grid voltage

    -350 V

    Direct grid voltage —350 \"

  • Direct anode current (zero signal) [1]

    0 mA

    Direct anode current (zero signal) 0-5 A

  • Direct anode current (zero signal) [2]

    -5 A

    Direct anode current (zero signal) 0-5 A

  • Direct anode current (maximum signal) [1]

    1 mA

    Direct anode current (maximum signal) 1-9 A

  • Direct anode current (maximum signal) [2]

    -9 mA

    Direct anode current (maximum signal) 1-9 A

  • Load resistor, anode-to-anode [1]

    2

    Load resistor, anode-to-anode 2-7 k2

  • Load resistor, anode-to-anode [2]

    -7

    Load resistor, anode-to-anode 2-7 k2

  • Peak a.f. grid to grid voltage [1]

    920 V

    Peak a.f. grid to grid voltage 920 \2

  • Peak a.f. grid to grid voltage [2]

    2 V

    Peak a.f. grid to grid voltage 920 \2

  • Grid drive power, approximately

    75 W

    Grid drive power, approximately 75 w

  • Direct grid current

    84 mA

    Direct grid current 84 mA

  • Direct grid dissipation [1]

    7 W

    Direct grid dissipation 7-6 w

  • Direct grid dissipation [2]

    -6 W

    Direct grid dissipation 7-6 w

  • Output power

    12 kW

    Output power 12 kw

  • E

    7 kV

    E 7/ v ANODE VOLTAGE (kV)

  • Published value

    1

    1. FILAMENT : N PATH FOR

  • Published value [1]

    2

    2. FILAMENT N' . 41

  • Published value [2]

    41

    2. FILAMENT N' . 41

  • Published value [1]

    3

    3. GRID 1 ‘ C ]

  • Published value [2]

    1

    3. GRID 1 ‘ C ]

  • Published value

    4

    4. ANODE L2