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.

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PHOTOMULTlPLlER TUBES

For Scintillation Counting, 127mm(5 Inch) Diameter

Bialkali Photocathode, 10-Stage, Head-On Type

GENERAL

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter

Parameter

Value

Description/Value

Unit

Spectral Response

300 to 650

nm

Wavelength of Maximum Response

420

nm

Photocathode

MateriaI

MateriaI

Bialkali

Structure

Number of Stages

10

Minimum Effective Area

R877

R877 01

111

mm dia.

pF

pF

Window

Borosilicate glass

Dynode

SuitabIe Socket

Base

14 pin base JEDEC No. B14 38

Direct Interelectrode

Capacitances

Anode to Last Dynode

Anode to All Other Electrodes

6

7

Supply Voltage

Between Anode and Cathode

Between Anode and Last Dynode

1500

Avarage Anode Current

Ambient Temperature

0.1

-30 to +50

300

Unit

Vdc

Vdc

mA

°C

K free Borosilicate glass

Box and Grid

E678 14A(option)

R877, R877-01

CHARACTERISTlCS (at 25

°C)

Parameter

Max.

Typ.

Min.

Cathode

Sensitivity

Gain

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

Radiant at 420nm

Blue (CS 5 58 filter)

A/W

A/lm

A/lm b

A/W

Anode Pulse Rise Time

10

ns

nA

Electron Transit Time

80

80

10

60

20

40

Time Response

Electrodes

K

Dy1

Dy2

Dy3

Dy4

Dy5

Dy6

Dy7

Dy8

Dy9

Dy10

G

P

Ratio

1

1

1

1

1

1

1

1

1

1

1

1

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

SuppIy Voltage : 1250Vdc,

K : Cathode,

Dy : Dynode,

P : Anode,

G:Grid

NOTE:

Anode Sensitivity

90

10

50

Unit

mA/W

VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE

ns

5.0

Luminous (2856K)

Radiant at 420nm

Luminous (2856K)