R1894 데이터 시트보기 (PDF) - Hamamatsu Photonics
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R1894 Datasheet PDF : 2 Pages
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PHOTOMULTIPLIER TUBE
R1894
10mm (3/8 Inch) Diameter, Head-on, 8-Stage,
Multialkali Photocathode, 300 to 850nm Spectral Response
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
Material
Minimum Useful Size
Window Material
Dynode
Structure
Number of Stages
Base
Socket
Description/Value
300 to 850
420
Multialkali
8
Borosilicate glass
Linear focused
8
11-pin glass base
E678-11N (supplied)
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage
Average Anode Current
Ambient Temperature
Parameter
Between Anode and Cathode
Between Anode and Last Dynode
Value
1500
250
0.03
-80 to +50
CHARACTERISTICS (at 25°C)
Parameter
Luminous (2856K)
Cathode Sensitivity
Radiant at 420nm
Red/White Ratio (with R-68 filter)
Anode Sensitivity
Luminous (2856K)
Radiant at 420nm
Gain
Anode Dark Current (after 30 min. storage in darkness)
Time Response
Anode Pulse Rise Time
Electron Transit Time
Min.
80
—
—
10
—
—
—
—
—
Typ.
120
51
0.2
50
2.1 × 104
4.2 × 105
2.0
0.8
7.8
Max.
—
—
—
—
—
—
20
—
—
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes K Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 P
Ratio
2
1
1
1
1
1
1
1
1
Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode
Unit
nm
nm
—
mm dia.
—
—
—
—
—
Unit
Vdc
Vdc
mA
°C
Unit
µA/lm
mA/W
—
A/lm
A/W
—
nA
ns
ns
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. © 1999 Hamamatsu Photonics K.K.
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