R7205-01 HAMAMATSU | Alldatasheet
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For Photon Counting Applications, Low Dark Counts (10cps Typ.) 10mm Effective Area, 28mm(1-1/8 inch) Diameter Bialkali Photocathode, Head - On Type Dynode Photocathode Wavelength of Maximum Response Material Minimum Effective Area Structure Number of Stages Base Suitable Socket 300 to 650 Borosilicate glass E678-14C(supplied) nm nm mm dia. GENERAL MAXIMUM RATINGS (Absolute Maximum Values) -80 to +50 mA 1500 250 0.01 Vdc VdcSupply Voltage Average Anode Current Ambient Temperature Between Anode and Cathode Between Anode and Last Dynode CHARACTERISTICS (at 25 °C) Blue (CS - 5 - 58 filter) Radiant at 420 nm Anode Sensitivity Anode Dark counts Anode Pulse Rise Time Electron Transit TimeTime Response 200 700 7.5 × 105 1.7 A/lm ns Cathode Sensitivity Luminous (2856K) 40 70 9.0 Luminous (2856K) 1 × 10 s-1 Parameter R7205-01 Unit Spectral Response Window Material 420 Bialkali Box and Line 14-pin glass base Parameter UnitValue Parameter UnitMax.Typ.Min. µA/lm mA/W µA/lm-b A/W ns26 VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE Electrode K Dy1 Dy2 Dy4 Dy5Dy3 Dy6 Dy7 Dy8 Dy9 P Supply Voltage: 1000Vdc, K: Cathode, Dy: Dynode, P: Anode 1111111112Ratio PHOTOMULTIPLIER TUBE R7205-01, R7207-01 Gain NOTE : Anode characteristics are measured with the voltage distribution ratio shown below. 10 30 R7207-01 160 to 650 Synthetic silica Radiant at 420 nm 1 1 Dy10 Dy11 Anode Dark current (after 30min storage in darkness) — — 3 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. ©2000 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.