Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Specialized - Switching Tube ·Tetrode

GMI2B

Russian high-power tetrode designed for pulse-modulator or pulse-power switching service in RF equipment, controlling high-voltage, high-current pulses rather than continuous linear amplification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
25 V / 4 A

Description

The GMI-2B tetrode is used in modulator service and is forced-air cooled.

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
25 V
Nominal heater current
4 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

No fixed ratings are recorded for this section.

Promoted-field audit performed from English ratings/characteristics; detailed electrical values retained 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

1968 Electronintorg

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • grid [1]

    1245

    Working position: upright. 1,2,4,5-heater; 3-grid 1;

  • grid [2]

    3

    Working position: upright. 1,2,4,5-heater; 3-grid 1;

  • grid [3]

    1

    Working position: upright. 1,2,4,5-heater; 3-grid 1;

  • cathode and [1]

    6

    6 — grid 2; 7 — cathode and

  • cathode and [2]

    2

    6 — grid 2; 7 — cathode and

  • cathode and [3]

    7

    6 — grid 2; 7 — cathode and

  • anode

    300

    Height: at most 300 mm. heater; A - anode

  • temperature, °C [1]

    -55 C

    .. —55-+70 Ambient temperature, °C —55t0 +70

  • temperature, °C [2]

    70 C

    .. —55-+70 Ambient temperature, °C —55t0 +70

  • temperature, °C [3]

    -55 C

    .. —55-+70 Ambient temperature, °C —55t0 +70

  • temperature, °C [4]

    70 C

    .. —55-+70 Ambient temperature, °C —55t0 +70

  • voltage (ACorDC), V [1]

    25 V

    ... ... 25 Heater voltage (ACorDC), V . .................. 25

  • voltage (ACorDC), V [2]

    25 V

    ... ... 25 Heater voltage (ACorDC), V . .................. 25

  • current, A [1]

    158 A

    TokHaKana, A ............. . 15,8-19,2 Heater current, A 15.8-19.2

  • current, A [2]

    -192 A

    TokHaKana, A ............. . 15,8-19,2 Heater current, A 15.8-19.2

  • current, A [3]

    15.8 A

    TokHaKana, A ............. . 15,8-19,2 Heater current, A 15.8-19.2

  • current, A [4]

    -19.2 A

    TokHaKana, A ............. . 15,8-19,2 Heater current, A 15.8-19.2

  • voltage (DC), kV

    32 kV

    HanpsbxeHwue, kB: Anode voltage (DC), kV ....................... 32

  • voltage (DC), kV [1]

    32 kV

    AHOAAMOCTOAHHOE . . ... ...t 32 Grid 2 voltage (DC), kV ... ... ... ... 2

  • voltage (DC), kV [2]

    2 kV

    AHOAAMOCTOAHHOE . . ... ...t 32 Grid 2 voltage (DC), kV ... ... ... ... 2

  • voltage (DC), kV [3]

    2 kV

    AHOAAMOCTOAHHOE . . ... ...t 32 Grid 2 voltage (DC), kV ... ... ... ... 2

  • voltage (DC), kV [1]

    2 kV

    CEeTKU BTOPON NOCTOAHHOE . . ... ............. 2 Grid 1 voltage (DC), kV ... ....... .. .. ... ... ... 600-107°

  • voltage (DC), kV [2]

    1 kV

    CEeTKU BTOPON NOCTOAHHOE . . ... ............. 2 Grid 1 voltage (DC), kV ... ....... .. .. ... ... ... 600-107°

  • voltage (DC), kV [3]

    600 kV

    CEeTKU BTOPON NOCTOAHHOE . . ... ............. 2 Grid 1 voltage (DC), kV ... ....... .. .. ... ... ... 600-107°

  • voltage (DC), kV [4]

    -107 kV

    CEeTKU BTOPON NOCTOAHHOE . . ... ............. 2 Grid 1 voltage (DC), kV ... ....... .. .. ... ... ... 600-107°

  • voltage, kV [1]

    600 kV

    CETKN NEPBOA NOCTORHHOE . . .. .. ... oo 600-107% Peak grid 1 excess voltage, kV .. ................ 200-107°

  • voltage, kV [2]

    -107 kV

    CETKN NEPBOA NOCTORHHOE . . .. .. ... oo 600-107% Peak grid 1 excess voltage, kV .. ................ 200-107°

  • voltage, kV [3]

    1 kV

    CETKN NEPBOA NOCTORHHOE . . .. .. ... oo 600-107% Peak grid 1 excess voltage, kV .. ................ 200-107°

  • voltage, kV [4]

    200 kV

    CETKN NEPBOA NOCTORHHOE . . .. .. ... oo 600-107% Peak grid 1 excess voltage, kV .. ................ 200-107°

  • voltage, kV [5]

    -107 kV

    CETKN NEPBOA NOCTORHHOE . . .. .. ... oo 600-107% Peak grid 1 excess voltage, kV .. ................ 200-107°

  • current, A, at least [1]

    6 A

    CETKW NEPBOY B UMNYNbCE (M36LITOYHOE) . ... .. 200-1072 Peak anode current, A, at least 90

  • current, A, at least [2]

    200 A

    CETKW NEPBOY B UMNYNbCE (M36LITOYHOE) . ... .. 200-1072 Peak anode current, A, at least 90

  • current, A, at least [3]

    -1072 A

    CETKW NEPBOY B UMNYNbCE (M36LITOYHOE) . ... .. 200-1072 Peak anode current, A, at least 90

  • current, A, at least [4]

    90 A

    CETKW NEPBOY B UMNYNbCE (M36LITOYHOE) . ... .. 200-1072 Peak anode current, A, at least 90

  • current (average value), mA, at least

    140 mA

    Tok aHopga, A, He meHee: Anode current (average value), mA, at least 140

  • current (average value), mA, atleast [1]

    90 mA

    BUMMYNBCE . .. ..ottt 90 Grid 1 current (average value), mA, atleast ... ... .. 1

  • current (average value), mA, atleast [2]

    1 mA

    BUMMYNBCE . .. ..ottt 90 Grid 1 current (average value), mA, atleast ... ... .. 1

  • current (average value), mA, atleast [3]

    1 mA

    BUMMYNBCE . .. ..ottt 90 Grid 1 current (average value), mA, atleast ... ... .. 1

  • current (average value), mA, atleast [1]

    3 mA

    aHoa (CpeaHee 3HAYGHNE) .. ............... 14,0102 Grid 2 current (average value), mA, atleast ... ... .. 30

  • current (average value), mA, atleast [2]

    140102 mA

    aHoa (CpeaHee 3HAYGHNE) .. ............... 14,0102 Grid 2 current (average value), mA, atleast ... ... .. 30

  • current (average value), mA, atleast [3]

    2 mA

    aHoa (CpeaHee 3HAYGHNE) .. ............... 14,0102 Grid 2 current (average value), mA, atleast ... ... .. 30

  • current (average value), mA, atleast [4]

    30 mA

    aHoa (CpeaHee 3HAYGHNE) .. ............... 14,0102 Grid 2 current (average value), mA, atleast ... ... .. 30

  • current

    1 mA

    Tok ceTku, MA, He MeHee: Negative cutoff voltage (at anode current 1 mA),

  • resistance, Q [1]

    3 ohm

    CETKW BTOPO (CpefHee 3Ha4YeHne) .. ......... 30 Anode load resistance, Q ........... ... ... 300

  • resistance, Q [2]

    30 ohm

    CETKW BTOPO (CpefHee 3Ha4YeHne) .. ......... 30 Anode load resistance, Q ........... ... ... 300

  • resistance, Q [3]

    300 ohm

    CETKW BTOPO (CpefHee 3Ha4YeHne) .. ......... 30 Anode load resistance, Q ........... ... ... 300

  • anode circuit, uF [1]

    3 pF

    HanpsixeHue 3anvpaHus (0TpuyaTensHoe) Reservoir capacitor in anode circuit, uF .. ...

  • anode circuit, uF [2]

    0 pF

    HanpsixeHue 3anvpaHus (0TpuyaTensHoe) Reservoir capacitor in anode circuit, uF .. ...

  • Pulse duration, us [1]

    1 us

    npv Toke aHopa 1 MA), B,He 6onee ............. 570 Pulse duration, us 0.65-1.1

  • Pulse duration, us [2]

    6 us

    npv Toke aHopa 1 MA), B,He 6onee ............. 570 Pulse duration, us 0.65-1.1

  • Pulse duration, us [3]

    570 us

    npv Toke aHopa 1 MA), B,He 6onee ............. 570 Pulse duration, us 0.65-1.1

  • Pulse duration, us [4]

    0.65 us

    npv Toke aHopa 1 MA), B,He 6onee ............. 570 Pulse duration, us 0.65-1.1

  • Pulse duration, us [5]

    -1.1 us

    npv Toke aHopa 1 MA), B,He 6onee ............. 570 Pulse duration, us 0.65-1.1

  • Pulse [1]

    300

    ConpoTUBnNeHue aHogHOM Harpysku, Om ... ... .. .. 300 Pulse 1/dutyfactor ........................... 570-615

  • Pulse [2]

    1

    ConpoTUBnNeHue aHogHOM Harpysku, Om ... ... .. .. 300 Pulse 1/dutyfactor ........................... 570-615

  • Pulse [3]

    570

    ConpoTUBnNeHue aHogHOM Harpysku, Om ... ... .. .. 300 Pulse 1/dutyfactor ........................... 570-615

  • Pulse [4]

    -615

    ConpoTUBnNeHue aHogHOM Harpysku, Om ... ... .. .. 300 Pulse 1/dutyfactor ........................... 570-615

  • Interelectrode capacitance, pF

    5 pF

    HakonuTenoHas eMKoCTb B Uenu aHoaa, mk® . . . .. 0,05 Interelectrode capacitance, pF:

  • input,atmost [1]

    65

    DnnuTenbHOCTL UMNYNBCA, MKC . . . ... oot 0,65-1,1 input,atmost . ... ... 350

  • input,atmost [2]

    -11

    DnnuTenbHOCTL UMNYNBCA, MKC . . . ... oot 0,65-1,1 input,atmost . ... ... 350

  • input,atmost [3]

    350

    DnnuTenbHOCTL UMNYNBCA, MKC . . . ... oot 0,65-1,1 input,atmost . ... ... 350

  • output,atmost [1]

    570

    CRBAMKHOCTD .+ v o v vveee e i e e e e e a e 570-615 output,atmost ... ... . 125

  • output,atmost [2]

    -615

    CRBAMKHOCTD .+ v o v vveee e i e e e e e a e 570-615 output,atmost ... ... . 125

  • output,atmost [3]

    125

    CRBAMKHOCTD .+ v o v vveee e i e e e e e a e 570-615 output,atmost ... ... . 125

  • voltage (ACorDC),V [1]

    237 V

    ... 23,7-26,3 Heater voltage (ACorDC),V ................... 23.7-26.3

  • voltage (ACorDC),V [2]

    -263 V

    ... 23,7-26,3 Heater voltage (ACorDC),V ................... 23.7-26.3

  • voltage (ACorDC),V [3]

    23.7 V

    ... 23,7-26,3 Heater voltage (ACorDC),V ................... 23.7-26.3

  • voltage (ACorDC),V [4]

    -26.3 V

    ... 23,7-26,3 Heater voltage (ACorDC),V ................... 23.7-26.3

  • voltage (DC), V [1]

    -600 V

    HaumeHbiuee HanpskeHwne ceTku nepsor (=), B . .. —-600 Minimum grid 1 voltage (DC), V ................. -600

  • voltage (DC), V [2]

    1 V

    HaumeHbiuee HanpskeHwne ceTku nepsor (=), B . .. —-600 Minimum grid 1 voltage (DC), V ................. -600

  • voltage (DC), V [3]

    -600 V

    HaumeHbiuee HanpskeHwne ceTku nepsor (=), B . .. —-600 Minimum grid 1 voltage (DC), V ................. -600

  • anode [1]

    900

    GHOAOM . ..ottt 900 anode .. ... 900

  • anode [2]

    900

    GHOAOM . ..ottt 900 anode .. ... 900

  • grid? [1]

    12

    CETKOMMEPBOM . . . ..ottt 12 grid? ... 12

  • grid? [2]

    12

    CETKOMMEPBOM . . . ..ottt 12 grid? ... 12

  • current, A .. .. ... ... L [1]

    110 A

    Haubonblunit TOK aHoga B umnynbee, A .. ... ... .. 110 Peak anode current, A .. .. ... ... L 110

  • current, A .. .. ... ... L [2]

    110 A

    Haubonblunit TOK aHoga B umnynbee, A .. ... ... .. 110 Peak anode current, A .. .. ... ... L 110

  • Pulse duration, us [1]

    3 us

    OnUTenbHOCTb UMNYNBCA, MKC . . ... ..o 0,3-2 Pulse duration, us .. ...........

  • Pulse duration, us [2]

    -2 us

    OnUTenbHOCTb UMNYNBCA, MKC . . ... ..o 0,3-2 Pulse duration, us .. ...........

  • anode face,°C

    120 C

    Hawbonbiuas TemnepaTypa AOHbILIKA Temperature of anode face,°C ................. 120

  • grid [1]

    1

    Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess

  • grid [2]

    1

    Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess

  • grid [3]

    1

    Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess Averaged Characteristic Curves (at peak grid 1 excess

  • voltage Uy jmp = [1]

    100 V

    voltage Uy, imp = 100 V): voltage Ugyimp = 125 V): voltage Uy jmp = 150 V):

  • voltage Uy jmp = [2]

    125 V

    voltage Uy, imp = 100 V): voltage Ugyimp = 125 V): voltage Uy jmp = 150 V):

  • voltage Uy jmp = [3]

    150 V

    voltage Uy, imp = 100 V): voltage Ugyimp = 125 V): voltage Uy jmp = 150 V):

  • anode [1]

    1

    _ - grid 1-anode _ _ _ _ grid 1-anode _ _ _ _ grid 1-anode

  • anode [2]

    1

    _ - grid 1-anode _ _ _ _ grid 1-anode _ _ _ _ grid 1-anode

  • anode [3]

    1

    _ - grid 1-anode _ _ _ _ grid 1-anode _ _ _ _ grid 1-anode

  • Anode Characteristic Curves (at peak [1]

    2

    Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak

  • Anode Characteristic Curves (at peak [2]

    2

    Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak

  • Anode Characteristic Curves (at peak [3]

    2

    Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak Averaged Grid 2-Anode Characteristic Curves (at peak

  • voltage Ug; imp = [1]

    1 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)

  • voltage Ug; imp = [2]

    100 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)

  • voltage Ug; imp = [3]

    1 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)

  • voltage Ug; imp = [4]

    125 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)

  • voltage Ug; imp = [5]

    1 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)

  • voltage Ug; imp = [6]

    150 V

    grid 1 excess voltage Ug;imp = 100 V) grid 1 excess voitage Ugyimp = 125 V) grid 1 excess voltage Ug; imp = 150 V)