Features

l Ceramic scintillator for high sensitivity and reliability

unlike CsI (ceramic scintillator: no deliquescence)

l 5 × 5 element photodiode array

l High sensitivity to X-rays: 1.8 times higher sensitivity

than CWO

l Less afterglow: lower than CsI

<0.1 %/3 ms, <0.01 %/30 ms

l Low crosstalk structure

Applications

l X-ray fluorescence analysis

l X-ray detection

PHOTODIODE

Si photodiode

High sensitivity X-ray detector

S7878

s Absolute maximum ratings (Ta=25

°C)

Parameter

Symbol

Value

Unit

Reverse voltage

V

Operating temperature

Topr

-10 to +60

°C

Storage temperature

Tstg

-20 to +70

°C

s Photodiode electrical and optical characteristics (Ta=25

°C, per element)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Spectral response range

λ

-

320 to 1000

-

nm

Peak sensitivity wavelength

λp

-

800

-

nm

λ=510 nm

0.33

0.38

-

A/W

Photo sensitivity

S

λ=λp

0.44

0.51

-

A/W

Dark current

-

1.5

10

pA

Terminal capacitance

Ct

-

20

-

pF

s X-ray sensitivity (tube current: 1.0 mA, aluminum filter: t=6 mm, distance=830 mm)

X-ray tube voltage

Value

Unit

120 kV

1.2

nA

Note) Sensitivity values are just for your reference. Actual sensitivity values may vary depending on an equipment type and

measurement conditions.

1