HAMAMATSU R649 Datasheet

PHOTOMULTIPLIER TUBE

R649

For Photon Counting

51 mm (2 Inch) Diameter, 12-Stage, Multialkali Photocathode, Head-On Type

GENERAL

Parameter Description/Value Unit

Spectral Response
Wavelength of Maximum Response

Photocathode
Window Material
Dynode
Base

Suitable Socket

Material
Minimum Effective Area

Structure
Number of Stages

300 to 850

420

Multialkali

5 × 8

Borosilicate glass

Box and Grid

12

21-pin glass base

E678-21A (supplied)

nm
nm

—

mm

—
—
—
—
—

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter Value Unit

Supply Voltage
Average Anode Current

Ambient Temperature

Between Anode and Cathode
Between Anode and Last Dynode

CHARACTERISTICS (at 25°C)

Parameter Min. Unit

Luminous (2856K)

Cathode Sensitivity

Anode Sensitivity
Gain

Anode Dark Counts (after 30min. storage in darkness)
Time Response

NOTE: Anode characteristics are measured with the voltage distribution ratio shown below.

Radiant at 420nm
Red/White Ratio (R-68)
Luminous (2856K)
Radiant at 420nm

Anode Pulse Rise Time
Electron Transit Time

80
—
—

100

—
—
—
—
—

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes
Ratio

Supply Voltage: 1000Vdc, K: Cathode, Dy: Dynode, P: Anode

K Dy1G

4

Dy20Dy3

2.5

1.5

Dy4

Dy51Dy61Dy7

11

1111

1500

250

0.01

-80 to +50

Typ. Max.

120

51

0.2

800

3.4 × 10

6.7 × 10
200

13
70

Dy8 Dy9 Dy10

—
—
—

5
6

—
—
—

350

—
—

Dy11 Dy12 P

11

Vdc
Vdc

mA

°C

µA/lm
mA/W

—
A/lm
A/W

—

cps

ns
ns

Subject to local technical requirements and regulat ions, availability of products included in this promotional material may var y. P lease consult with our sales office.
Information furnished by HAMA M ATSU is believed to be reliable. However, n o 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.

PHOTOMULTIPLIER TUBE R649

Figure 1: Typical Spectral Response

TPMHB0530EA

100

10

QUANTUM
EFFICIENCY

1

QUANTUM EFFICIENCY (%)

0.1

CATHODE RADIANT SENSITIVITY (mA/W)

0.01
200 400 600 800 1000

WAVELENGTH (nm)

CATHODE
RADIANT
SENSITIVITY

Figure 2: Typical Gain Characteristics

TPMHB0607EA

9

10

8

10

7

10

6

10

5

10

GAIN

4

10

3

10

2

10

1

10

500 750

SUPPLY VOLTAGE (V)

12501000

1500

2000

Figure 3: Dimensional Outline and Basing Diagram (Unit: mm)

52.0±1.5

FACEPLATE

PHOTO­CATHODE

HA COATING

21 PIN BASE

5 8

13MAX. 126±2

DY12

DY11

DY9

DY7

P

DY5

IC

7
6
5

4

DY3

8

3

IC

10

9

2

DY1

IC

DY10

DY8

11

12

13

14

15

16
17

18

19

20

21

1

IC

K

DY6

DY4

DY2

G

IC

IC

TPMHA0216EB

Socket

(E678-21A)

51
19

R5

56.8

5

136

4

TACCA0011EA

HAMAMATSU PHOTONICS K.K., Electron Tube Center
314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: [phone], Fax: [phone]

U.S.A.:

Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: [phone], Fax: [phone]

Germany:

Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]

France:

Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]

United Kingdom:
North Europe:
Italy:

Hamamatsu Photonics UK Limited: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: [phone], Fax: [phone]

Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: [phone], Fax: [phone]

Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

TPMH1256E01
MAR. 1999