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PHOTOMULTlPLlER TUBE
R2257
For visible to near IR low light detections
Extended red multialkali photocathode
51mm(2 Inch) diameter, 12–stage, Head–on type
GENERAL
Parameter
Spectral Response 300 to 900 nm
Wavelength of Maximum Response 600 nm
Photocathode
Window Material Borosilicate glass
Dynode
Direct Interelectrode
Capacitances
Base
SuitabIe Socket
MateriaI Extended red multialkali
Minimum Effective Area 46 mm dia.
Structure
Number of Stages
Anode to Last Dynode
Anode to All Other Electrodes
Description/Value Unit
Linear focused
12
2
2.5
21–pin glass base
E678–21A(supplied)
pF
pF
MAXIMUM RATINGS (Absolute Maximum Values)
Unit
Vdc
Vdc
mA
Supply Voltage
Avarage Anode Current
Ambient Temperature
Between Anode and Cathode
Between Anode and Last Dynode
Parameter Value
2700
500
0.2
-80 to +50
CHARACTERISTlCS (at 25 )
Parameter Max.Typ.Min.
Cathode
Sensitivity
Anode
Sensitivity
Gain
Dark Current (after 30min. storage in darkness)
Time
Response
NOTE:
Anode characteristics are measured with the voItage distribution ratio shown below.
Luminous(2856K)
Radiant at 600nm
Red/White Ratio (R–68 filter)
Luminous(2856K)
Radiant at 600nm
Anode Pulse Rise Time 2.6 ns
Electron Transit Time
140
15
230
50
0.35
100
2.2 10
4.3 10
4
5
30 100
48
Unit
A/lm
mA/W
A/lm
A/W
nA
ns
VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE
Electrodes
Ratio 04 1 1.4 1 111111111
SuppIy Voltage : 1500Vdc, K : Cathode, Dy : Dynode, G : Grid, P : Anode
Shield is connected to Dy5.
K Dy1G Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 Dy12 P
Subject to local technical requirements and regulat ions, availability of products included in this promotional material may va r y. Please consult with our sales office.
lnformation furnished by HAMA M ATSU is believed to be reliabIe. However, no responsibility is assumed for possibIe inaccuracies or commission. Specifications are
subjected to change without notice. No patent right are granted to any of the circuits described herein.
1997 Hamamatsu Photonics K.K.
©
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PHOTOMULTlPLlER TUBE R2257
Figure 1: Typical Spectral Response Figure 2:Typical Gain Characteristics
TPMHB0341EA
2
10
1
10
0
10
QUANTUM EFFICIENCY (%)
1
-
10
CATHODE RADIANT SENSITIVITY (mA/W)
2
-
10
200 300 400 500 600 700 800 900 1000
WAVELENGTH (nm)
GAIN
TPMHB0355EB
8
10
7
10
6
10
5
10
4
10
3
10
2
10
500 300015001000700
2000 2500
SUPPLY VOLTAGE (V)
Figure 3: Dimensional Outline and Basing Diagram (Unit : mm)
52 1
FACEPLATE
PHOTOCATHODE
46MIN.
126 2
IC
SH
IC
11
10
DY12
9
8
P
7
DY11
6
DY9
5
4
DY7
3
2
DY5
1
DY3
DY1
BOTTOM VIEW
DY10
12
13
20
21
K
14
19
IC
DY8
15
16
17
18
DY6
DY4
IC
IC
(BASING DIAGRAM)
21 PIN BASE
13MAX.
TPMHA0359EA
DY2
G
R5
Socket
(E678 – 21A)
51
19
56.8
5
136
4
TACCA0011EA
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, 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:
North Europe:
Italy:
Hamamatsu Photonics UK Limted: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384
Hamamatsu Photonics Norden AB: Färögatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95
Hamamatsu Photonics Italia: S.R.L.: Via Della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741
TPMH1141E02
MAY 1997
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