PHOTOMULTIPLIER TUBE R2248 10mm × 10mm Square Envelope, Head-On Type 8-Stage, Bialkali Photocathode GENERAL Parameter Spectral Response Wavelength of Maximum Response Material Photocathode Minimum Useful Area Window Material Structure Dynode Number of Stages Base Weight Suitable Socket Description/Value 300 to 650 420 Bialkali 8×8 Borosilicate glass Linear focused 8 11-pin glass base Approx. 4.5 E678-11N (supplied) Unit nm nm — mm — — — — g — Value 1500 250 0.03 -80 to +50 Unit Vdc Vdc mA °C MAXIMUM RATINGS (Absolute Maximum Values) Supply Voltage Parameter Between Anode and Cathode Between Anode and Last Dynode Average Anode Current Ambient Temperature CHARACTERISTICS (at 25°C) Cathode Sensitivity Parameter Luminous (2856K) Radiant at 420nm Blue (CS 5-58 filter) Luminous (2856K) Anode Sensitivity Gain Anode Dark Current (after 30min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time Min. 60 — — 30 — — — Typ. 95 76 9.5 100 1.1 × 106 1 0.9 9 Max. — — — — — 50 — — Unit µA/lm mA/W µA/lm-b A/lm — nA ns ns VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 P Ratio 2 2 1 1 1 1 1 1 1 Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode 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. © 1998 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBE R2248 Figure 1: Typical Spectral Response Figure 2: Typical Gain Characteristics TPMHB0543EA 108 CATHODE RADIANT SENSITIVITY TPMHB0565EA 107 10 106 QUANTUM EFFICIENCY GAIN CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) 100 1 105 104 0.1 103 0.01 200 400 600 102 500 800 700 1000 1500 2000 SUPPLY VOLTAGE (V) WAVELENGTH (nm) Figure 3: Dimensional Outline and Basing Diagram (Unit: mm) 9.8 ± 0.4 Socket (E678-11N) DY7 5 DY8 7 8 4 10MAX. 1 IC 11 K 11 2 11 PIN BASE 9.5 9 DY4 DY3 3 DY1 10.5 DY6 10 DY2 3 DY5 P 6 3 PHOTOCATHODE 9.8 ± 0.4 8MIN. 45.0 ± 1.5 FACEPLATE 8MIN. 4.3 SHORT PIN 9.5 TPMHA0098EA TACCA0043EA HAMAMATSU PHOTONICS K.K., Electoron Tube Center 314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205 U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384 North Europe: Hamamatsu Photonics Norden AB: Färögatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95 Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 TPMH1228E01 SEPT. 1998