GENERAL
Parameter
Description/Value
Unit
Spectral Response
Wavelength of Maximum Response
Photocathode
Window Material
Dynode
Base
Suitable Socket
nm
nm
--
mm dia.
--
--
--
--
--
300 to 650
420
Bialkali
46
Borosilicate glass
Box(3) and Line(5)
8
15-pin glass base
E678-15B (supplied)
Material
Minimum Effective Area
Structure
Number of Stages
PHOTOMULTIPLIER TUBE
R3048
MAXIMUM RATINGS (Absolute Maximum Values)
Information furnished by HA MAM ATS 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.
2001 Hamamatsu Photonics K.K.
Subject to local technical requirements and regulations, availability of products included in this promotional material may var y. Please consult with our sales office.
For Liquid Scintillation Counting, 51 mm (2 Inch) Diameter
Bialkali Photocathode, High Counting Efficiency, Low BKG
Window of Low
40
K Content, Head-On Type
CHARACTERISTICS (at 25
C)
Parameter
Min.
Unit
Parameter
Value
Unit
Supply Voltage
Average Anode Current
Ambient Temperature
1500
250
0.1
-80 to +50
V dc
V dc
mA
C
Between Anode and Cathode
Between Anode and Last Dynode
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Current (after 30 min storage in darkness)
Time Response
Luminous (2856 K)
Radiant at 420 nm
Blue Sensitivity Index (CS 5-58)
Luminous (2856 K)
Radiant at 420 nm
Anode Pulse Rise Time
Electron Transit Time
60
--
--
3
--
--
--
--
--
80
80
10.5
8
8
10
3
1
10
5
1.0
8.9
38
A/lm
mA/W
--
A/lm
A/W
--
nA
ns
ns
--
--
--
--
--
--
--
--
--
Typ.
Max.
NOTE: Anode characteristics are measured with a voltage distribution ratio shown below.
Supply Voltage: 1000 V dc, K: Cathode, Dy: Dynode, P: Anode
VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrodes
Ratio
K
Dy1
4
Dy2
1
Dy3
1
Dy4
Dy5
1
Dy6
1
Dy7
1
1
Dy8
P
1
1
PHOTOMULTIPLIER TUBE R3048
Figure 1: Spectral Response
TPMH1151E02
OCT. 2001 IP
TPMHB0204EA
Figure 2: Dimensional Outline and Basing Diagram (Unit: mm)
TPMHA0122EA
TACCA0201EA
Socket
(E678-15B)
Bottom View
HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
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Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: info@hamamatsu.it
HOMEPAGE URL http://www.hamamatsu.com
50
60
40
4
45
2
5
11.5
40
5
200
800
600
400
0.01
0.1
1
10
100
CATHODE RADIANT SENSITIVITY (mA/W)
QUANTUM EFFICIENCY (%)
WAVELENGTH (nm)
CATHODE
RADIANT
SENSITIVITY
QUANTUM
EFFICIENCY
5
6
1
2
3
4
7
8
9
10
11
12
13
14
15
IC
K
DY6
DY8
DY7
DY5
DY3
DY1
DY4
DY2
IC
SHORT PIN
IC
IC
P
IC
52.01.5
46MIN.
84.02.0
13MAX.
FACEPLATE
PHOTOCATHODE
HA COATING
15 PIN BASE
7.5MAX.
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