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1999 Hamamatsu Photonics K.K.
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High–speed Photon Counting and Fluorescence Measurement
51mm(2 Inch) Diameter, 12–stage, Head–on Type
R3234–01:Borosilicate Window (300 to 650nm)
R3235–01:Synthetic Silica Window (160 to 650nm)
GENERAL
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
Avarage Anode Current
Ambient Temperature
Parameter
R3234–01
R3235–01
Value
2500
500
Description/Value
300 to 650
160 to 650
420
Bialkali
10
Borosilicate glass
Synthetic silica glass
Linear focused
12
20–pin base (JEDEC No. B20–102)
E678–20A (supplied)
Unit
nm
nm
nm
Spectral Response
Wavelength of Maximum Response
Photocathode
MateriaI
Minimum Effective Area
Structure
Number of Stages
R3234–01
R3235–01
mm dia.
Window Material
Dynode
Base
SuitabIe Socket
Supply Voltage
0.1
Unit
Vdc
Vdc
mA
-30 to +50
CHARACTERISTlCS (at 25
°
C)
Parameter
Luminous (2856K)
Max.
Typ.
80
72
9.0
2000
2.0
Min.
60
Cathode
Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Anode Dark Counts
Radiant at 420nm
Blue (CS 5–58 filter)
Luminous (2856K)
2.5
10
7
A/W
A/lm
A/lm
mA/W
A/lm b
Anode Pulse Rise Time
Electron Transit Time
Transit Time Spread (FWHM)
1.3
28
0.45
ns
ns
ns
nA
cps
1
500
Time
Response
Electrodes
Ratio
SuppIy Voltage : 2000Vdc, K : Cathode, Dy : Dynode, P : Anode
K
Dy1
Dy2
Dy3
Dy4
Dy5
Dy6
Dy7
Dy8
Dy9
Dy10 Dy11
1
Dy12
P
4
1.2
1.8
1
1
1
1
1
1
1
1
1
Anode
Sensitivity
50
150
10
Unit
VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE
10
6
Radiant at 420nm
HIGH–SPEED
PHOTON COUNTING
PHOTOMULTIPLIER TUBES
R3234–01, R3235–01
Anode characteristics are measured with the voItage distribution ratio shown below.
NOTE: