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PDF R4998 Data sheet ( Hoja de datos )
| Número de pieza | R4998 | |
| Descripción | PHOTOMULTIPLIER TUBE | |
| Fabricantes | Hamamatsu Corporation | |
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PHOTOMULTIPLIER TUBE
R4998
Fast Time Response, 25 mm (1 Inch) Diameter,
10-stage, Bialkali Photocathode, Head-On Type
GENERAL
Parameter
Spectral Response
Wavelength of Maximum Response
Photocathode
Material
Minimum Effective Area
Window Material
Dynode
Structure
Number of Stages
Base
Suitable Socket
Description/Value
300 to 650
420
Bialkali
20
Borosilicate glass
Linear-focused
10
12-pin base JEDEC No. B12-43
E678-12A (supplied)
MAXIMUM RATINGS (Absolute Maximum Values)
Parameter
Supply Voltage
Between Anode and Cathode
Between Anode and Last Dynode
Average Anode Current
Ambient Temperature
Value
2500
250
0.1
-30 to +50
CHARACTERISTICS (at 25°C)
Parameter
Min.
Cathode Sensitivity
Luminous (2856K)
Radiant at 420nm
60
—
Anode Sensitivity
Gain
Blue (CS-5-58 filter)
Luminous (2856K)
Radiant at 420nm
—
100
—
—
Anode Dark Current (after 30min. storage in darkness)
Time Response
Anode Pulse Rise Time
Electron Transit Time
—
—
—
NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.
Typ.
70
72
9.0
400
4.1 × 105
5.7 × 106
100
0.7
10
Max.
—
—
—
—
—
—
800
—
—
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes K G Dy1 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P
Ratio
1.3 4.8 1.2 1.8 1 1 1 1 1 1.5 3 2.5
Supply Voltage: 2250Vdc, K: Cathode, Dy: Dynode, P: Anode
Unit
nm
nm
—
mm dia.
—
—
—
—
—
Unit
Vdc
Vdc
mA
°C
Unit
µA/lm
mA/W
µA/lm-b
A/lm
A/W
—
nA
ns
ns
Assembled type (H6533) is recommended.
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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| PDF Descargar | [ Datasheet R4998.PDF ] | |
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