HAMAMATSU R1894 Datasheet

PHOTOMULTIPLIER TUBE

R1894

10mm (3/8 Inch) Diameter, Head-on, 8-Stage,

Multialkali Photocathode, 300 to 850nm Spectral Response

GENERAL

Parameter Description/Value Unit

Spectral Response
Wavelength of Maximum Response

Photocathode
Window Material
Dynode
Base

Socket

Material
Minimum Useful Size

Structure
Number of Stages

300 to 850

420

Multialkali

8

Borosilicate glass

Linear focused

8

11-pin glass base

E678-11N (supplied)

nm
nm

—

mm dia.

—
—
—
—
—

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 Current (after 30 min. storage in darkness)
Time Response

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

Anode Pulse Rise Time
Electron Transit Time

80
—
—
10
—
—
—
—
—

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes
Ratio

Supply Voltage: 1250Vdc, K: Cathode, Dy: Dynode, P: Anode

K Dy12Dy21Dy31Dy41Dy51Dy61Dy71Dy8

11

1500

250

0.03

-80 to +50

Typ. Max.

120

51

0.2
50

2.1 × 10

4.2 × 10

P

4
5

2.0

0.8

7.8

—
—
—
—
—
—
20
—
—

Vdc
Vdc

mA

°C

µA/lm
mA/W

—
A/lm
A/W

—

nA

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 R1894

Figure 1: Typical Spectral Response

TPMHB0547EB

100

10

QUANTUM
EFFICIENCY

WAVELENGTH (nm)

QUANTUM EFFICIENCY (%)

CATHODE RADIANT SENSITIVITY (mA/W)

1

0.1

0.01
200 600400 800 1000

CATHODE
RADIANT
SENSITIVITY

Figure 2: Typical Gain Characteristics

TPMHB0550EA

7

10

6

10

5

10

GAIN

4

10

3

10

2

10

500 600 700 800 1000 1200 1400

SUPPLY VOLTAGE (V)

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

9.7 ± 0.4

FACEPLATE

PHOTOCATHODE

11 PIN BASE

8MIN.

45.0 ± 1.5

10MAX.

DY5

DY3

DY1

DY7

5

4

3

2

IC

SHORT PIN

P

DY8

6

7

8

9

10

DY2

11

1

K

TPMHA0343EA

DY6

DY4

Socket

(E678-11N)

4.3

10.5

9.5

3

11

3

9.5

TACCA0043EA

HAMAMATSU PHOTONICS K.K., Electron Tube Center

HOMEPAGE URL http://www.hamamatsu.com

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]

TPMH1223E03
DEC. 1999