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300 to 850nm Response (S–20)

38mm(1–1/2 Inch) Diameter, 10–stage, Head–On Type

GENERAL

Parameter

Description/Value

Unit

Spectral Response

300 to 850

nm

Wavelength of Maximum Response

420

nm

Photocathode

MateriaI

Multialkali

Structure

Number of Stages

Anode to Last Dynode

Anode to All Other Electrodes

Minimum Effective Area

34

mm dia.

pF

pF

Window Material

Direct Interelectrode

Capacitances

Borosilicate glass

Dynode

Base

Weight

81

g

SuitabIe Socket

Circular cage

10

3.0

4.0

E678 12A(supplied)

12 pin base JEDEC No.B12 43

CHARACTERISTlCS (at 25

°C)

Parameter

Max.

Typ.

Min.

Cathode

Sensitivity

Gain

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

Radiant at 420nm

Radiant at 420nm

Red/White Ratio (R 68)

Luminous (2856K)

Luminous (2856K)

A/W

Anode Pulse Rise Time

2.8

ns

nA

Electron Transit Time

150

64

50

0.2

80

10

Time Response

Electrodes

K

Dy1

Dy2

Dy3

Dy4

Dy5

Dy6

Dy7

Dy8

Dy9

Dy10

P

Ratio

2

1

1

1

1

1

1

1

1

1

1

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

SuppIy Voltage : 1000Vdc,

K : Cathode,

Dy : Dynode,

P : Anode

NOTE:

Anode

Sensitivity

40

425

Unit

mA/W

A/lm

A/lm

VOLTAGE DlSTRlBUTlON RATlO AND SUPPLY VOLTAGE

ns

3. 3

2. 1

PHOTOMULTlPLlER TUBE

R1387

The configuration and basing diagram of the R1387 are identical with 6199 Photomultiplier tubes.

MAXIMUM RATINGS (Absolute Maximum Values)

Parameter

Value

Supply Voltage

Between Anode and Cathode

Between Anode and Last Dynode

1250

Avarage Anode Current

Ambient Temperature

0.2

-30 to +50

250

Unit

Vdc

Vdc

mA

°C