1P21

PHOTOMULTIPLIER TUBE 1P21 FEATURES 28mm (1-1/8 Inch) Diameter Side-on 300 to 650nm Spectral Response Low Dark Current Visible Range Photocathode GENERAL Parameter Description/Value 300 to 650 Spectral Response 400 Wavelength of Maximum Response Sb-Cs PhotoMaterial 8 × 24 cathode Minimum Useful Size Borosilicate glass Window Material Circular-cage Structure Dynode 9 Number of Stages Direct 4 Anode to Last Dynode Interelectrode 6 Capacitances Anode to All Other Electrodes JEDEC No. B11-88 Base E678-11A Suitable Socket Unit nm nm — mm — — — pF pF — — Figure 1: Typical Spectral Response TPMSB0139EA 100 CATHODE RADIANT SENSITIVITY CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) 10 1 QUANTUM EFFICIENCY 0.1 0.01 200 400 600 800 WAVELENGTH (nm) Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATS U 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. © 1999 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBE 1P21 MAXIMUM RATINGS (Absolute Maximum Values) Parameter Between Anode and Cathode Supply Between Anode Voltage and Last Dynode Average Anode Current Ambient Temperature Value 1250 250 0.1 -80 to +50 Unit Vdc Vdc mA °C 107 108 Figure 2: T...