PHOTOMULTIPLIER TUBE
R2295
For Photon Counting Applications
19 mm (3/4 Inch) Diameter, Bialkali Photocathode
Borosilicate Glass Window, 10-stage, Head-On Type
GENERAL
Parameter
Description/Value
300 to 650
420
Unit
nm
nm
—
mm dia.
—
Spectral Response
Wavelength of Maximum Response
Material
Minimum Effective Area
Bialkali
Photocathode
4
Window Material
Dynode
Borosilicate glass
Linear focused
10
—
—
Structure
Number of Stages
—
—
Base
Suitable Socket
12-pin glass base
E678-12L (supplied)
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Value
1250
250
0.1
-80 to +50
Unit
Vdc
Vdc
mA
°C
Between Anode and Cathode
Between Anode and Last Dynode
Supply Voltage
Average Anode Current
Ambient Temperature
CHARACTERISTICS (at 25°C)
Parameter
Min.
50
—
—
—
—
—
—
—
Typ.
70
72
9.0
350
3.6 × 105
5.0 × 106
0.5
Max.
—
—
—
—
—
—
5
Unit
µA/lm
mA/W
µA/lm-b
A/lm
A/W
—
nA
cps
ns
ns
Luminous (2856K)
Cathode Sensitivity
Radiant at 420nm
Blue (CS-5-58 filter)
Luminous (2856K)
Radiant at 420nm
Anode Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Anode Dark Counts
5
1.7
24
15
—
—
Anode Pulse Rise Time
Electron Transit Time
—
—
Time Response
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
K
Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10
P
Ratio
2
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 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.
1999 Hamamatsu Photonics K.K.
©