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PHOTOMULTlPLlER TUBE
R2228
For Visible to Near IR Low Light Detection Extended Red Multialkali Photocathode 28mm(1–1/8 Inch) Diameter, 11–stage, Head–On Type
GENERAL
Parameter Spectral Response Wavelength of Maximum Response MateriaI Photocathode Minimum Effective Area Window Material Structure Dynode Number of Stages Direct Interelectrode Anode to Last Dynode Capacitances Anode to All Other Electrodes Base SuitabIe Socket Description/Value 300 to 900 600 Extended red multialkali 25 Borosilicate glass Box–and –grid 11 3.0 3.5 14–pin glass base E678–14C(supplied) Unit nm nm mm dia.
pF pF
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage Avarage Anode Current Ambient Temperature Parameter Between Anode and Cathode Between Anode and Last Dynode Value 1500 250 0.