... 12 inch), nine stage, side-on photomultiplier tubes, borosilicate glass, double-alkali photocathode Features: Diameter of 28.5mm ... .12 inch), nine stage, side-on photomultiplier tubes, borosilicate glass,double-alkali photocathode, 170 ~ 350nm spectral response, using ... 50°CMaximum Ratings(Absolute maximum Values): Between anode and cathode Voltage1250Vdc Average anode current0.02mACharacteristic(At 25° ...