HAMAMATSU R2228 Datasheet

PHOTOMULTlPLlER TUBE

R2228

For Visible to Near IR Low Light Detection

Extended Red Multialkali Photocathode

28mm(1–1/8 Inch) Diameter, 11–stage, Head–On Type

GENERAL

Parameter

Spectral Response 300 to 900 nm
Wavelength of Maximum Response 600 nm

Photocathode
Window Material Borosilicate glass
Dynode
Direct Interelectrode

Capacitances
Base
SuitabIe Socket

MateriaI Extended red multialkali
Minimum Effective Area 25 mm dia.

Structure
Number of Stages
Anode to Last Dynode
Anode to All Other Electrodes

Description/Value Unit

Box–and –grid

11

3.0

3.5

14–pin glass base

E678–14C(supplied)

pF
pF

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter Value

Supply Voltage
Avarage Anode Current

Ambient Temperature

Between Anode and Cathode
Between Anode and Last Dynode

1500

250

0.1

–80 to +50

CHARACTERISTlCS (at 25 )

Parameter Max.Typ.Min.

Cathode
Sensitivity

Anode
Sensitivity

Gain
Anode Dark Current (after 30min. storage in darkness)

Time Response

NOTE:

Anode characteristics are measured with the voItage distribution ratio shown below.

Luminous (2856K)
Radiant at 600nm
Red/White Ratio (R–68)
Luminous (2856K)
Radiant at 600nm

Anode Pulse Rise Time 15 ns
Electron Transit Time

100

20

200

40

0.3

150

3.0 10

7. 5 1 0

4
5

830

60

VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE

Electrodes
Ratio 1 1 1 1 1 1 1 1 1 1 1 1

SuppIy Voltage : 1000Vdc, K : Cathode, Dy : Dynode, P : Anode, G:Grid

K Dy1G Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 Dy11 P

Unit

Vdc
Vdc

mA

Unit

A/lm

mA/W

A/lm
A/W

nA

ns

Subject to local technical requirements and regulat ions, availability of products included in this promotional material may va r y. Please consult with our sales office.
lnformation furnished by HAMA M ATSU is believed to be reliabIe. However, no responsibility is assumed for possibIe inaccuracies or commission. Specifications are

subjected to change without notice. No patent right are granted to any of the circuits described herein.

1992 Hamamatsu Photonics K.K.

©

PHOTOMULTlPLlER TUBE R2228

Figure 1: Typical Spectral Response

TPMHB0163EA

100

10

QUANTUM
EFFICIENCY

0

QUANTUM EFFICIENCY (%)

0.1

CATHODE RADIANT SENSITIVITY (mA/W)

CATHODE
RADIANT
SENSITIVITY

0.01
200 300 400 500 600 700 800 900 1000

WAVELENGTH (nm)

Figure 2: Dimensional Outline and Basing Diagram (Unit : mm)

28.5 0.5

FACEPLATE

PHOTOCATHODE

25MIN.

112 2

DY9

DY7

DY5

DY11

4

3

DY3

P

6

5

2

1

IC

SHORT PIN

DY10

DY8

8

7

9

DY6

10

11

DY4

12

DY2

13

K

14

DY1

BOTTOM VIEW

(BASING DIAGRAM)

TPMHA0181EA

(E678 – 14C)

2- 3.5

Socket

44
35

26

25

2.5

11.6

30

19.1

7
9

14 PIN BASE

HAMAMATSU PHOTONICS K.K., Electoron 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, 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 Limted: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: [phone], Fax: [phone]

Hamamatsu Photonics Norden AB: Färögatan 7, S-164-40 Kista Sweden, Telephone: [phone], Fax: [phone]

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

13MAX.

TACCA0004EA

TPMH1062E01
DEC. 1992