nA

For Photon Counting Applications, Low Dark Counts (10cps Typ.)

10mm Effective Area, 28mm(1-1/8 inch) Diameter

Bialkali Photocathode, Head - On Type

Dynode

Photocathode

Wavelength of Maximum Response

Material

Minimum Effective Area

Structure

Number of Stages

Base

Suitable Socket

300 to 650

10

Borosilicate glass

11

E678-14C(supplied)

nm

nm

—

—

—

—

mm dia.

—

—

GENERAL

MAXIMUM RATINGS (Absolute Maximum Values)

-80 to +50

mA

1500

250

0.01

Vdc

Vdc

Supply Voltage

Average Anode Current

Ambient Temperature

Between Anode and Cathode

Between Anode and Last Dynode

CHARACTERISTICS (at 25

°C)

Blue (CS - 5 - 58 filter)

Radiant at 420 nm

Anode

Sensitivity

Anode Dark counts

Anode Pulse Rise Time

Electron Transit Time

Time Response

—

200

—

—

—

700

7.5

1.7

—

—

—

—

—

—

A/lm

ns

Cathode

Sensitivity

Luminous (2856K)

—

40

70

72

9.0

Luminous (2856K)

1

Parameter

R7205-01

Unit

Spectral Response

Window Material

420

Bialkali

Box and Line

14-pin glass base

Parameter

Unit

Value

Parameter

Unit

Max.

Typ.

Min.

µA/lm

mA/W

µA/lm-b

A/W

ns

26

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrode

K

Dy1

Dy2

Dy4

Dy5

Dy3

Dy6

Dy7

Dy8

Dy9

P

Supply Voltage: 1000Vdc,

K: Cathode,

Dy: Dynode,

P: Anode

1

11

1

1

1

1

1

1

2

Ratio

PHOTOMULTIPLIER TUBE

R7205-01, R7207-01

Gain

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

—

—

10

30

—

—

—

R7207-01

160 to 650

Synthetic silica

Radiant at 420 nm

1

1

Dy10

Dy11

Anode Dark current (after 30min storage in darkness)

—

—

3

°C

Information furnished by HAMAMATSU 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. ©2000 Hamamatsu Photonics K.K

Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.