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The MICROWAVE (up to 3000 MHz)TRIODES GI-21B is manufactured in the "Soyuse" (UNION-eng.) factory in Novosibirsk,Russian Siberia. Cathode: indirectly heated, oxide-coated. Envelope:coaxial, metal-ceramic. Height: at most 88.5 mm with heat sink, 78.7 mm with no heat sink. Diameter: at most 45 mm with heat sink, 36.3 mm with no heat sink. Mass: at most 120 g with heat sink, 60 g with no heat sink. Mutual conductance (at anode voltage, 600 V, grid voltage change ±0.5 V, anode current 75 mA), mA/V 23-34 Penetration factor (at anode voltage 600 V, anode voltage change -200 V, anode current 75 mA), % 0.65-1.4 Cutoff voltage (at anode voltage 600 V, grid current 0.5 µA), V 0 to -1.5 Interelectrode capacitance, pF: peak value: (with pulse duration at most 5 µs) 5kV DC component CW operation 0.35 peak value: (with pulse duration at most 5 µs) 4.5A in pulsed operation, at least 9.5 Cathode heating time, s, at least 60 Temperature at leads of cathode and grid, °C 140 Resistance in grid circuit, kOm, at least 10 Notes: It is sceptical to read these factory data for russian tubes.These tubes is designed in USSR in 1988 in the absence of the market. Product not need for advertisment. And producer indicate double smaller limit electrical parameters.This reduce its warranty responsiblity before consumer. This sale is for Three (3) GI-21B tube, NEW in Boxes. (Gi-21B microwave triodes.150W to 3000 mhz lot of 3 was posted and is owned by: Billy Dawson) |
bdawson@chicagopartsnetwork.com (Billy Dawson) for more information.