R649 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – PHOTOMULTIPLIER TUBE

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
Material
Minimum Effective Area
Window Material
Dynode
Structure
Number of Stages
Base
Suitable Socket
Description/Value
Unit
300 to 850
nm
420
nm
Multialkali
—
5×8
mm
Borosilicate glass
—
Box and Grid
—
12
—
21-pin glass base
—
E678-21A (supplied)
—
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage
Between Anode and Cathode
Between Anode and Last Dynode
Average Anode Current
Ambient Temperature
Value
1500
250
0.01
-80 to +50
CHARACTERISTICS (at 25°C)
Parameter
Min.
Luminous (2856K)
80
Cathode Sensitivity
Radiant at 420nm
—
Red/White Ratio (R-68)
—
Anode Sensitivity
Luminous (2856K)
100
Radiant at 420nm
—
Gain
—
Anode Dark Counts (after 30min. storage in darkness)
—
Time Response
Anode Pulse Rise Time
Electron Transit Time
—
—
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
Vdc
Vdc
mA
°C
Unit
µA/lm
mA/W
—
A/lm
A/W
—
cps
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: 1000Vdc, 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.