GENERAL

Parameter

Description/Value

Unit

Spectral Response

Wavelength of Maximum Response

Photocathode

Window Material

Dynode

Base

Suitable Socket

nm

nm

—

mm dia.

—

—

—

—

—

300 to 900

600

Extended Red Multialkali

46

Borosilicate glass

Box and Grid

10

15-pin glass base

E678-15B (supplied)

Material

Minimum Effective Area

Structure

Number of Stages

PHOTOMULTIPLIER TUBE

R669

MAXIMUM RATINGS (Absolute Maximum Values)

Information furnished by HA MAM ATS 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.

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

51 mm (2 Inch) Diameter, 10-stage, Head-On Type

Extended Red Multialkali Photocathode

CHARACTERISTICS (at 25

°C)

Parameter

Min.

Unit

Parameter

Value

Unit

Supply Voltage

Average Anode Current

Ambient Temperature

1500

250

0.1

-80 to +50

V dc

V dc

mA

°C

Between Anode and Cathode

Between Anode and Last Dynode

Cathode Sensitivity

Anode Sensitivity

Gain

Anode Dark Current (after 30 min storage in darkness)

Time Response

Luminous (2856 K)

Radiant at 420 nm

Red/White Ratio (R-68)

Luminous (2856 K)

Radiant at 420 nm

Anode Pulse Rise Time

Electron Transit Time

140

—

—

20

—

—

—

—

—

230

50

0.35

75

1.7

3.3

7

9.0

70

µA/lm

mA/W

—

A/lm

A/W

—

nA

ns

ns

—

—

—

—

—

—

15

—

—

Typ.

Max.

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

Supply Voltage: 1000 V dc, K: Cathode, Dy: Dynode, P: Anode

VOLTAGE DISTRIBUTION RATIO AND SUPPLY VOLTAGE

Electrodes

Ratio

K

G

Dy1

1

Dy2

1

Dy3

1

Dy4

Dy5

1

Dy6

1

Dy7

11

Dy8

Dy9

Dy10

P

11

11

1