R3998-02
R3998-02 is PHOTOMULTlPLlER TUBE manufactured by Hamamatsu Corporation.
PHOTOMULTl PLl ER TUBE
R3998- 02
For High Energy Physics and Scintillation Counting, 28mm(1- 1/8 Inch) Diameter, Low Profile, Bialkali Photocathode, 9- Stage, Head- On Type
GENERAL
Parameter Spectral Response Wavelength of Maximum Response Photocathode Materia I Material Minimum Effective Area Window Material Structure Dynode Number of Stages Base Suitab Ie Socket Description / Value 300 to 650 420 Bialkali 25 Borosilicate glass Box(3) and Line(6) 9 14- pin glass base E678- 14C (Supplied) Unit nm nm mm dia.
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter Between Anode and Cathode Supply Voltage Between Anode and Last Dynode Avarage Anode Current Ambient Temperature Value 1500 250 0.1
- 80 to +50 Unit Vdc Vdc m A
CHARACTERISTl CS (at 25
Cathode Sensitivity Anode Sensitivity
)
Min. 60 Typ. 90 85 10.5 120 1.1 105 1.3 106 2 3.4 23 Max. Unit A/lm m A/W A/lm b A/lm A/W n A ns ns
Parameter Luminous (2856K) Radiant at 420nm Blue (CS- 5- 58 filter) Luminous (2856K) Radiant at 420nm
Gain Anode Dark Current (after 30min. storage in darkness) Anode Pulse Rise Time Time Response Electron Transit Time
NOTE: Anode characteristics are measured with the vo Itage distribution ratio shown below.
VOLTAGE Dl STRl BUTl ON RATl O AND SUPPLY VOLTAGE
K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Electrodes Ratio 3 1 1 1 1 1 1.5 1 1 1 1 Supp Iy Voltage : 1000Vdc, K : Cathode, Dy : Dynode, P : Anode, G : Grid P
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. lnformation furnished by HAMAMATS U is believed to be reliab Ie. However, no responsibility is assumed for possib Ie inaccuracies or mission. Specifications are subjected to change without notice. No patent right are granted to any of the circuits described herein. © 1996 Hamamatsu Photonics K.K.
PHOTOMULTl PLl ER TUBE R3998- 02
Figure 1: Typical Spectral Response
TPMHB0204EA
CATHODE RADIANT SENSITIVITY (m A/W) QUANTUM...