PHOTOMULTIPLIER TUBE R2078 Extremely Improved Solar Blind Photocathode for Aerospace and General Photometric Applications, 25mm (1 Inch) Diameter, Ruggedized Low Profile Tube, Cs-Te Photocathode, 10-Stage, Head-on FEATURES High Quantum Efficiency ..................................... 14% at 254nm Typ. Ruggedized, Low Profile Structure ..................... 20g's vibration 43mm in bulb length GENERAL Parameter Spectral Response Wavelength of Maximum Response Material Photocathode Minimum Useful Diameter Window Material Structure Dynode Number of Stages Base (temporary) Suitable Socket Description/Value 160 to 320 240 Cs-Te 21 Fused silica Circular cage 10 12-pin base JEDEC No. B12-13 E678-12A (supplied) Unit nm nm — mm dia. — — — — — Value 2000 300 0.015 Unit Vdc Vdc mA MAXIMUM RATINGS (Absolute Maximum Values) Supply Voltage Parameter Between Anode and Cathode Between Anode and Last Dynode Average Anode Current CHARACTERISTICS (at 25°C) Cathode Sensitivity Anode Sensitivity Parameter Radiant at 254nm Radiant at 254nm Radiant at 365nm Radiant at 550nm Gain Anode Dark Current (after 30 min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time Min. 20 2.0 × 103 — — 1.0 × 105 — — — Typ. 29 1.5 × 104 1.5 1.6 × 10-2 5.0 × 105 15 1.5 14 Max. — — — — — 100 — — Unit mA/W A/W A/W A/W — pA ns ns VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Ratio 3 1 1 1 1 1 1 1 1 1 1 Supply Voltage: 1500Vdc, K: Cathode, Dy: Dynode, P: Anode P 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 R2078 Figure 1: Typical Spectral Response TPMHB0559EA 108 TPMHB0560EA 101 107 CATHODE RADIANT SENSITIVITY 100 106 10-1 GAIN PHOTOCATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) 102 Figure 2: Typical Gain Characteristics 10-2 105 10-3 104 10-4 QUANTUM EFFICIENCY 103 10-5 10-6 200 300 400 500 600 102 500 700 WAVELENGTH (nm) 700 1000 1500 2000 3000 SUPPLY VOLTAGE (V) Figure 3: Dimensional Outline and Basing Diagram (Unit: mm) Socket (E678-12A) 25.4 ± 0.8 Temporary Base Removed 21MIN. 13MAX. PHOTOCATHODE SEMIFLEXIBLE LEADS 43.0 ± 1.5 FACEPLATE 47 P 8 DY9 6 DY7 5 DY5 4 40 DY10 10 DY8 11 DY3 3 12 DY6 DY1 2 13 DY4 14 DY2 17 K 17 Bottom View P 6 5 DY10 7 DY8 8 9 DY6 DY7 4 DY3 34 11 2 1 DY1 12 5 10 DY4 DY5 3 37.3 ± 0.5 2- 3.2 DY2 K 15 DY9 8 50MIN. 12 PIN BASE JEDEC No. B12-43 TPMHA0438EA TACCA0009EA 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 TPMH1226E01 AUG. 1998