
Features
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Metal package with BNC connector
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High sensitivity
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High reliability
Applications
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Analytical instruments
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Optical measurement equipment
P H O T O D I O D E
Si photodiode
S2281 series
Si photodiode with BNC connector
S2281 series is Si photodiodes sealed in a metal package with a BNC connector. This configuration allows easy connection to Hamamatsu
C9329 photosensor amplifier (
S2281-01 has a large terminal capacitance which may cause a gain peaking to occur when C9329 is used with the
gain set to the "M" range.
). Two different spectral response characteristics are provided and the large active area makes S2281 series well suited
for optical power meters. A variant type S9219 with a visual compensation filter is also available.
Hamamatsu also provides E2573 BNC-BNC coaxial cable (length: 1 m) as an option.
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General ratings
Parameter
S2281
φ
11.3
100
S2281-01
φ
11.3
100
S2281-04
φ
7.98
50
Unit
mm
mm
2
-
-
Active area size
Active area
Package
Window material
Metal package with BNC connector
Quartz glass
I
Absolute maximum ratings
Parameter
Reverse voltage
Operating temperature
Storage temperature
Symbol
V
R
Max.
Topr
Tstg
S2281
S2281-01
5
-10 to +60
-20 to +70
S2281-04
Unit
V
°
C
°
C
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Electrical and optical characteristics (Ta=25
°
C, unless otherwise noted)
S2281
Typ.
190 to
1100
S2281-01
Typ.
190 to
1000
S2281-04
Typ.
190 to
1100
Parameter
Symbol
Condition
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Spectral response range
λ
-
-
-
-
-
-
nm
Peak sensitivity
wavelength
λ
p
-
960
-
-
720
-
-
960
-
nm
λ
=200 nm
λ
=
λ
p
100
lx
V
R
=10 mV
V
R
=10 mV
V
R
=0 V
R
L
=1 k
V
R
=0 V
f=10 kHz
V
R
=0 V,
λ
=
λ
p
0.10
-
64
-
20
0.12
0.5
80
50
200
-
-
-
0.10
-
32
-
30
0.12
0.36
40
6
1700
-
-
-
0.10
-
32
-
20
0.12
0.5
40
50
200
-
-
-
Photo sensitivity
S
A/W
Short circuit current
Dark current
Shunt resistance
Isc
I
D
Rsh
μ
A
pA
M
500
-
300
-
500
-
Rise time
tr
-
3
-
-
7
-
-
3
-
μ
s
Terminal capacitance
Ct
-
1300
-
-
3200
-
-
1300
-
pF
Noise equivalent power
NEP
-
1.8×10
-14
-
-
8.6×10
-15
-
-
1.8×10
-14
-
W/Hz
1/2
1