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GMI-42B

Modulator triode for application in pulse modulators of radioelectronic equipment.

Cathode: indirectly heated, oxide coated.

Envelope: metal ceramic.

Cooling: forced air.

Weight : 1.2 kg.

Environmental parameters:

Vibration loads:

frequencies, Hz . . . . . . . . . . . . . . . 5-1000

acceleration, m/s2 . . . . . . . . . . . . . . 73.5

Multiple impacts with acceleration, m/s2 . . . . 343

Single impacts with acceleration, m/s2 . . . . . 1470

Ambient temperature, °C . . . . . . . . . . . . - 60 to +100

Relative humidity at +40 °C,% . . . . . . . . . . 98

Electrical parameters:

Heater voltage , V . . . . . . . . . . . . . . . . . . . 26

Heater current, A . . . . . . . . . . . . . . . . . . . 3.2-3.6

Anode voltage , kV . . . . . . . . . . . . . . . . . . 2.5

Peak excess grid voltage, kV . . . . . . . . . . . 1.3

Peak anode current, A . . . . . . . . . . . . . . . . 30

Interelectrode capacitance, pF:

input, not more than . . . . . . . . . . . . . . . 130

output, not more than . . . . . . . . . . . . . . 25

input-to-output , not more than . . . . . 2

Limit Operating Values

Heater voltage (AC or DC), V . . . . . . . . . . . 24.2-27.8

Anode voltage (DC), kV . . . . . . . . . . . . . . . 30

Negative grid voltage, absolute value, V . . . . . . . 600

Peak excess grid voltage, V . . . . . . . . . . . . .1400

Dissipation power , W:

anode . . . . . . . . . . . . . . . . . . . . . . . 500

grid . . . . . . . . . . . . . . . . . . . . . . . . . 25

Peak cathode current, A:

with 1/duty factor = 500 . . . . . . . . . . . . . 33

with 1/duty factor = 33 . . . . . . . . . . . . . 9

Maximum pulse duration at peak cathode

current not more than 33 A, uS. . . . . . . . . . . . . 50

Minimum warm uptime, min:

at anode current 30 A . . . . . . . . . . . . . 3

at anode current 8 A and anode

voltage up to 20 kV . . . . . . . . . . . . . 2.5

with enforced heater voltage and

anode voltage 25 kV . . . . . . . . . . . . . . 2

Envelope temperature, °C . . . . . . . . . . . . . 150

You can order GMI-42B from us

Russian Electronics company Russia, Moscow region, Ryazan,Sobornay square 2.

Tel: +7 (491) 227-61-51, Fax: +7 (491) 227-18-88

russian-electronics.com

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