R1250 Hamamatsu Corporation, R1250 Datasheet
R1250
Manufacturer Part Number
R1250
Description
PHOTOMULTIPLIER TUBE
Manufacturer
Hamamatsu Corporation
Datasheet
1.R1250.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R1250V251A-E2-F
Manufacturer:
RICOH
Quantity:
1 922
* Measured with special voltage distribution ratios shown in the Table 2.
MAXIMUM RATINGS (Absolute Maximum Values)
Supply Voltage: 2000Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
Supply Voltage: 2500Vdc, K: Cathode, Dy: Dynode, P: Anode, G: Grid
GENERAL
CHARACTERISTICS (at 25 C)
Table 1: VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Table 2: SPECIAL VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE
Electrode
Ratio
Electrode
Ratio
Capacitors in F
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.
Spectral Response
Wavelength of Maximum Response
Photocathode
Window
Dynode
Base
Suitable Socket
Supply Voltage
Average Anode Current
Ambient Temperature
Cathode Sensitivity
Anode Sensitivity
Gain
Anode Dark Current (after 30min. storage in darkness)
Time Response
Pulse Height Resolution with
Gain Deviation
Pulse Linearity *
127mm (5 Inch) Diameter, Bialkali Photocathode, 14-Stage, Head-on Type
For High Energy Physics, Fast Time Response, High Pulse Linearity
FOR PULSE LINEARITY MEASUREMENT
K
K
2.5
2.5
G1
G1
7.5
7.5
G2
G2
Luminous (2856K)
Blue (with CS 5-58 filter)
Quantum Efficiency at 390nm
Luminous (2856K)
Blue (with CS 5-58 filter)
Anode Pulse Rise Time
Electron Transit Time
Transit Time Spread
Long Term
Short Term
2% Deviation
5% Deviation
Material
Minimum Useful Diameter
Material
Structure
Number of Stages
Between Anode and Cathode
Between Anode and Last Dynode
Parameter
Parameter
Parameter
137
0
0
Cs
Dy1
Dy1
1.2
1.2
Dy2
Dy2
1.8
1.8
Dy3
Dy3
1
1
Dy4
Dy4
1
1
Dy5
Dy5
1
1
Dy6
Dy6
PHOTOMULTIPLIER TUBE
R1250
1
1
Dy7
Dy7
Min.
300
7.0
55
—
—
—
—
—
—
—
—
—
—
—
—
1.2
1
©
Dy8
Dy8
E678-20A (supplied)
1999 Hamamatsu Photonics K.K.
Description/Value
Borosilicate glass
0.01
1.5
Linear focused
1
20-pin base
300 to 650
-30 to +50
Dy9
Dy9
1.4
Bialkali
Value
3000
1000
Typ.
420
120
500
130
160
250
0.2
9.0
2.5
1.2
8.3
1.0
1.0
14
0.01
70
22
50
54
1
2
10
Dy10 Dy11 Dy12
Dy10 Dy11 Dy12
7
0.02
2.8
1
Max.
0.02
300
1.5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4
0.02
1.5
5.7
Dy13
Dy13
0.04
mm dia.
A/lm-b
3
8
A/lm-b
Unit
Unit
Unit
A/lm
Vdc
Vdc
mA
A/lm
nm
nm
Dy14
Dy14
nA
—
ns
ns
ns
—
—
—
—
—
—
%
%
%
%
%
%
C
0.06
2.5
5
P
P
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R1250 Summary of contents
Page 1
... 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. PHOTOMULTIPLIER TUBE R1250 Dy2 Dy3 Dy4 ...
Page 2
... PHOTOMULTIPLIER TUBE R1250 Figure 1: Typical Spectral Response TPMHB0518EA 100 10 QUANTUM EFFICIENCY 1 0.1 0.01 200 400 WAVELENGTH (nm) Figure 3: Dimensional Outline and Basing Diagram (Unit: mm) 133 2 120MIN. FACEPLATE PHOTO- CATHODE HA COATING 20 PIN BASE JEDEC No. B20-102 52.5MAX. 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 U ...