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| 型號： | R2257 |
| 廠商： | Hamamatsu Photonics |
| 英文描述： | PHOTOMULTlPLlER TUBE |
| 中文描述： | PHOTOMULTlPLlER管 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 25K |
| 代理商： | R2257 |
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
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
Avarage Anode Current
Parameter
Value
2700
500
0.2
Description/Value
300 to 900
600
Extended red multialkali
46
Borosilicate glass
Linear focused
12
2
Unit
nm
nm
Spectral Response
Wavelength of Maximum Response
pF
pF
Photocathode
MateriaI
Minimum Effective Area
Structure
Number of Stages
Anode to Last Dynode
Anode to All Other Electrodes
mm dia.
Window Material
Dynode
Direct Interelectrode
Capacitances
Base
SuitabIe Socket
Supply Voltage
Ambient Temperature
-80 to +50
Unit
Vdc
Vdc
mA
2.5
21–pin glass base
E678–21A(supplied)
CHARACTERISTlCS (at 25 )
Parameter
Luminous(2856K)
Max.
Typ.
230
50
0.35
100
Min.
140
Cathode
Sensitivity
Gain
Dark Current (after 30min. storage in darkness)
Anode Pulse Rise Time
Electron Transit Time
Response
Anode characteristics are measured with the voItage distribution ratio shown below.
NOTE:
Radiant at 600nm
Red/White Ratio (R–68 filter)
Luminous(2856K)
A/W
2.6
48
ns
ns
nA
15
Time
Electrodes
Ratio
SuppIy Voltage : 1500Vdc, K : Cathode, Dy : Dynode, G : Grid, P : Anode
Shield is connected to Dy5.
K
Dy1
G
Dy2
Dy3
Dy4
Dy5
Dy6
Dy7
Dy8
Dy9
Dy10 Dy11
1
Dy12
P
0
4
1
1.4
1
1
1
1
1
1
1
1
1
Anode
Sensitivity
30
100
Unit
A/lm
mA/W
A/lm
VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE
4.3
10
5
2.2
10
4
Radiant at 600nm
lnformation furnished by HAMAMATSU 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.
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
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