
GENERAL
Parameter
Description/Value
300 to 650
420
Bialkali
46
Borosilicate glass
Linear focused
12
20-pin glass base
E678-20A (supplied)
Unit
nm
nm
—
mm dia.
—
—
—
—
—
Spectral Response
Wavelength of Maximum Response
Photocathode
Window Material
Dynode
Base
Suitable Socket
Material
Minimum Effective Area
Structure
Number of Stages
PHOTOMULTIPLIER TUBE
R1828-01
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
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subject to change without notice. No patent rights are granted to any of the circuits described herein.
2000 Hamamatsu Photonics K.K.
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Fast Time Response, 51 mm (2 Inch) Diameter,
12-Stage, Bialkali Photocathode Head-On Type
CHARACTERISTICS (at 25
°
C)
Parameter
Luminous (2856K)
Radiant at 420nm
Blue (CS-5-58 filter)
Luminous (2856K)
Radiant at 420nm
Min.
60
—
—
200
—
—
—
—
—
—
—
Unit
μ
A/lm
mA/W
μ
A/lm-b
A/lm
A/W
—
nA
ns
ns
mA
mA
Value
3000
400
0.2
-30 to +50
Unit
Vdc
Vdc
mA
°
C
Supply Voltage
Average Anode Current
Ambient Temperature
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Time Response
Pulse Linearity
Anode Pulse Rise Time
Electron Transit Time
at 2% Deviation
at 5% Deviation
90
85
10.5
1800
1.7
×
10
6
2.0
×
10
7
50
1.3
28
250
500
—
—
—
—
—
—
400
—
—
—
—
Typ.
Max.
Supply Voltage: 2500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
Ratio
1.2
2.8
1.2
1.8
K
G2 & Dy1
G1
Dy2
Dy3
Dy4
Dy5
1
Dy6
1
Dy7
1
1
Dy8
Dy9
Dy10
1.5
1
1
1.5
Dy11
Dy12
P
3
2.5
Supply Voltage: 2500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
SPECIAL VOLTAGE DISTRIBUTION RATIO FOR PULSE LINEARITY MEASUREMENTS
Electrodes
Ratio
1.2
2.8
1.2
1.8
1
1
K
G2 & Dy1
G1
Dy2
Dy3
Dy4
Dy5
Dy6
Dy7
1.2
1.5
Dy8
Dy9
Dy10
2
2.8
4
5.7
Dy11
Dy12
P
8
5
NOTE:
Anode characteristics are measured with the voltage distribution ratio shown below.