PHOTOMULTIPLIER TUBE R3256 51 mm (2 Inch) Diameter, Multialkali Photocathode 10-Stage, Head-on Type GENERAL Parameter Spectral Response Wavelength of Maximum Response Material Photocathode Minimum Useful Size Window Material Structure Dynode Number of Stages Base Socket Description/Value 300 to 850 420 Multialkali 46 Borosilicate glass Linear focused 10 JEDEC No.B14-38 E678-14A Unit nm nm — mm dia. — — — — — Value 1600 350 0.1 -30 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 Anode Sensitivity Parameter Luminous (2856K) Radiant Sensitivity at 420nm Luminous (2856K) Radiant Sensitivity at 420nm Red/White Ratio Gain Anode Dark Current (after 30min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time Min. 80 — 20 — 0.15 — — — — Typ. 150 64 150 6.4 × 104 0.2 1.0 × 106 5 3.4 31 Max. — — — — — — 20 — — Unit µA/lm mA/W A/lm A/W — — nA ns ns VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P Ratio 2 1 1 1 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. © 1999 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBE R3256 Figure 2: Typical Gain and Anode Dark Current TPMHB0595EA 108 CATHODE RADIANT SENSITIVITY TPMHB0596EA 10-5 107 10-6 106 10-7 105 10-8 104 10-9 103 10-10 10 GAIN CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) 100 QUANTUM EFFICIENCY 1 0.1 0.01 200 400 600 800 102 500 1000 WAVELENGTH (nm) 700 1000 1500 ANODE DARK CURRENT (A) Figure 1: Typical Spectral Response 10-11 2000 SUPPLY VOLTAGE (V) Figure 3: Dimensional Outline and Basing Diagram (Unit: mm) 51.0±0.5 FACEPLATE 46MIN. Socket (E678-14A) PHOTOCATHODE DY5 5 DY8 DY9 8 9 10 DY10 DY4 4 11 P DY3 3 12 IC 13 G 14 K 2 DY2 1 DY1 62 56 30 DY7 7 6 17 11 DY6 2 14 PIN BASE JEDEC No. B14-38 147MAX. 124±2 19.8 56.5±0.5 TPMHA0296EA TACCA0044EB HOMEPAGE URL http://www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron 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(20)8-367-3560, Fax: 44(20)8-367-6384 North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 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 TPMH1245E02 DEC. 1999