R2078

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. — — — — — MAXIMUM RATINGS (Absolute Maximum Values) Supply Voltage Average Anode Current Parameter Between Anode and Cathode Between Anode and Last Dynode Value 2000 300 0.015 Unit Vdc Vdc mA CHARACTERISTICS (at 25°C) Cathode Sensitivity Anode Sensitivity Parameter Radiant at 254nm Radiant at 254nm Radiant at 365nm Radiant at 550nm 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 Gain Anode Dark Current (after 30 min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time 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: Cathod...