Datasheet

PHOTOMULTIPLIER TUBE
R2248
10mm × 10mm Square Envelope, Head-On Type
8-Stage, Bialkali Photocathode
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Material
Photocathode
Minimum Useful Area
Window Material
Structure
Dynode
Number of Stages
Base
Weight
Suitable Socket
Description/Value
300 to 650
420
Bialkali
8×8
Borosilicate glass
Linear focused
8
11-pin glass base
Approx. 4.5
E678-11N (supplied)
Unit
nm
nm
—
mm
—
—
—
—
g
—
Value
1500
250
0.03
-80 to +50
Unit
Vdc
Vdc
mA
°C
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
Average Anode Current
Ambient Temperature
CHARACTERISTICS (at 25°C)
Cathode Sensitivity
Parameter
Luminous (2856K)
Radiant at 420nm
Blue (CS 5-58 filter)
Luminous (2856K)
Anode Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Anode Pulse Rise Time
Time Response
Electron Transit Time
Min.
60
—
—
30
—
—
—
Typ.
95
76
9.5
100
1.1 × 106
1
0.9
9
Max.
—
—
—
—
—
50
—
—
Unit
µA/lm
mA/W
µA/lm-b
A/lm
—
nA
ns
ns
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
K
Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8
P
Ratio
2
2
1
1
1
1
1
1
1
Supply Voltage: 1250Vdc, 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. © 1998 Hamamatsu Photonics K.K.
PHOTOMULTIPLIER TUBE R2248
Figure 1: Typical Spectral Response
Figure 2: Typical Gain Characteristics
TPMHB0543EA
108
CATHODE
RADIANT
SENSITIVITY
TPMHB0565EA
107
10
106
QUANTUM
EFFICIENCY
GAIN
CATHODE RADIANT SENSITIVITY (mA/W)
QUANTUM EFFICIENCY (%)
100
1
105
104
0.1
103
0.01
200
400
600
102
500
800
700
1000
1500
2000
SUPPLY VOLTAGE (V)
WAVELENGTH (nm)
Figure 3: Dimensional Outline and Basing Diagram (Unit: mm)
9.8 ± 0.4
Socket
(E678-11N)
DY7
5
DY8
7
8
4
10MAX.
1
IC
11
K
11
2
11 PIN BASE
9.5
9 DY4
DY3 3
DY1
10.5
DY6
10
DY2
3
DY5
P
6
3
PHOTOCATHODE
9.8 ± 0.4
8MIN.
45.0 ± 1.5
FACEPLATE
8MIN.
4.3
SHORT PIN
9.5
TPMHA0098EA
TACCA0043EA
HAMAMATSU PHOTONICS K.K., Electoron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384
North Europe: Hamamatsu Photonics Norden AB: Färögatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95
Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741
TPMH1228E01
SEPT. 1998
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