R2248 HAMAMATSU | Alldatasheet
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Parameter Description/Value Unit Spectral Response Wavelength of Maximum Response Photocathode Window Material Dynode Base Weight Suitable Socket nm nm mm g 300 to 650 420 Bialkali 8 × 8 Borosilicate glass Linear focused 11-pin glass base Approx. 4.5 E678-11N (supplied) Material Minimum Useful Area Structure Number of Stages PHOTOMULTIPLIER TUBE R2248 MAXIMUM RATINGS (Absolute Maximum Values) Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. © 1998 Hamamatsu Photonics K.K. Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. 10mm × 10mm Square Envelope, Head-On Type 8-Stage, Bialkali Photocathode CHARACTERISTICS (at 25 °C) Parameter Min. Unit Parameter Value Unit Supply Voltage Average Anode Current Ambient Temperature 1500 250 0.03 -80 to +50 Vdc Vdc mA Between Anode and Cathode Between Anode and Last Dynode Cathode Sensitivity Anode Sensitivity Gain Anode Dark Current (after 30min. storage in darkness) Time Response Luminous (2856K) Radiant at 420nm Blue (CS 5-58 filter) Luminous (2856K) Anode Pulse Rise Time Electron Transit Time 9.5 100 1.1 × 10 0.9 µA/lm mA/W µA/lm-b A/lm nA ns ns Typ. Max. Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE Electrodes Ratio K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 P