S7978 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Si photodiode array 5 × 5 element array for X-ray detector

PHOTODIODE
Si photodiode array
S7978
5 × 5 element array for X-ray detector
Features
l High reliability photodiode with ceramic scintillator
High X-ray sensitivity: 1.8 times higher than CWO scintillator
Less afterglow: <0.1 %/3 ms, <0.01 %/30 ms
No deliquescence
l 5 × 5 element photodiode array
l Number of channels can be increased by connecting
several S7978 together.
Applications
l X-ray analysis, X-ray detection
s Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Value
Unit
Reverse voltage
VR Max.
5
V
Operating temperature
Topr
-10 to +60
°C
Storage temperature
Tstg
-20 to +70
°C
s Electrical and optical characteristics (Ta=25 °C, per 1 element, without scintillator)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Spectral response range
λ
With resin
-
220 to 1000
-
nm
Peak sensitivity wavelength
λp
-
720
-
µm
Photo sensitivity
S λ=500 nm, with resin
-
0.36
-
A/W
Dark current
ID
VR=10 mV
-
0.1
10
pA
Terminal capacitance
Ct VR=5 V, f=10 kHz
-
30
50
pF
s X-ray sensitivity (reference value, per 1 element, tube current: 1.0 mA, aluminum filter: t=6 mm, distance=830 mm)
X-ray tube voltage
Typ.
Unit
120 kV
2.1
nA
Note) Depends on equipment and measurement conditions.
1