IFK-500 is a fhotoflash spiral tube. Made by MELZ Factory (Moscow, Russia).
Ignition voltage, not higher, V: 400;
Self-breakdown voltage, not lower, V: 3500;
Optimum operating voltage, V: 500;
Internal resistance, Ohm: 4;
Operating voltage, V: 500;
Capacitor capacitance, μF: 4000;
Flash energy, J: 500;
Flash duration, microseconds: 8;
Min. interval between flashes, sec: 15;
Amplitude of power, kW: 60;
Average power, W: 33;
Amplitude of luminous intensity, ccd: 110;
Amplitude of brightness, Mnt: 90;
The least illumination, sv: 1000;
Service life, flashes (not less than): 10000;
Shape of the luminous part: cylindrical;
Dimensions of the luminous part: diameter 30 x 43 mm.
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