R4632

PHOTOMULTIPLIER TUBE R4632 For Single Photon Counting, Dark Counts 50cps Typ. at 25°C For Extremely Low Light Level Detection 28mm (1-1/8 Inch) Diameter, 9-stage, Multialkali Photocathode, Side-On Type 185 to 850nm Spectral Response GENERAL Parameter Spectral Response Wavelength of Maximum Response Material Photocathode Minimum Effective Area Window Material Structure Dynode Number of Stages Direct Interelectrode Anode to Last Dynode Capacitances Anode to All Other Electrodes Base Weight Suitable Socket Suitable Socket Assembly Description/Value 185 to 850 430 Multialkali 8 × 24 UV glass Circular-cage 9 Approx. 4 Approx. 6 JEDEC No. B11-88 Approx. 45 E678-11A (option) E717-21, E717-37 (option) Unit nm nm — mm — — — pF pF — g — — MAXIMUM RATINGS (Absolute Maximum Values) Supply Voltage Average Anode Current Ambient Temperature Parameter Between Anode and Cathode Between Anode and Last Dynode Value 1250 250 0.1 -80 to +50 Unit Vdc mA °C CHARACTERISTICS (at 25°C) Parameter Luminous (2856K) at 400nm at 500nm at 600nm at 700nm at 800nm Min. 140 — — — — — 0.1 — 300 — — — — — — Typ. 200 23.7 18.3 10.7 2.7 0.56 0.15 7.5 700 3.5 × 106 50 0.2 2.2 22 1.2 Max. — — — — — — — — — — 100 1 — — — Unit µA/lm Cathode Sensitivity Quantum Efficiency % Anode Sensitivity Gain Dark Counts * Anode Dark Current (after 30min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time Transit Time Spread (T.T.S.) * Measured at the voltage producing the gain of 1 × 106 Red/Whi...