R649_15 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – For Photon Counting, 51 mm (2 Inch) Diameter 12-Stage, Multialkali Photocathode, Head-on Type

PHOTOMULTIPLIER TUBE
R649
For Photon Counting, 51 mm (2 Inch) Diameter
12-Stage, Multialkali Photocathode, Head-on Type
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
MateriaI
Minimum Effective Area
Window Material
Dynode
Structure
Number of Stages
Operating Ambient Temperature
Storage Temperature
Base
Suitable Socket
Description / Value
Unit
300 to 850
nm
420
nm
Multialkali
—
5×8
mm
Borosilicate glass
—
Box and Grid
—
12
—
-30 to +50
°C
-80 to +50
°C
21-pin glass base
—
E678-21C (supplied)
—
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Value
Unit
Supply Voltage
Between Anode and Cathode
Between Anode and Last Dynode
1500
V
250
V
Average Anode Current
0.01
mA
CHARACTERISTICS (at 25 °C)
Parameter
Luminous (2856 K)
Cathode Sensitivity
Radiant at 420 nm
Red / White Ratio (R-68)
Anode Sensitivity
Luminous (2856 K)
Radiant at 420 nm
Gain
Anode Dark Current (after 30 min. storage in darkness)
Time Response
Anode Pulse Rise Time
Electron Transit Time
Min.
80
—
—
100
—
—
—
—
—
NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.
Typ.
120
51
0.2
800
3.4 × 10⁵
6.7 × 10⁶
200
13
70
Max.
—
—
—
—
—
—
350
—
—
Unit
µA/lm
mA/W
—
A/lm
A/W
—
s^-1
ns
ns
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 P
Ratio
4
0 2.5 1.5 1
1
1
1
1
1
1
1
1
1
Supply Voltage: 1000 Vdc, 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 HAMAMATSU 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. ©2010 Hamamatsu Photonics K.K.