Si photodiodes
S1226 series
For UV to visible, precision photometry;
suppressed near IR sensitivity
These Si photodiodes have suppressed IR sensitivity. They are suitable for low-light-level detection in analysis and the like.
Features
Applications
Suppressed near IR sensitivity
Analytical equipment
High sensitivity in UV region (quartz glass type)
Optical measurement equipment, etc.
Low dark current
High reliability
Structure / Absolute maximum ratings
Type no.
Dimensional
outline/
Window
material*1
S1226-18BQ*2
S1226-18BK
S1226-5BQ*2
S1226-5BK
S1226-44BQ*2
S1226-44BK
S1226-8BQ*2
S1226-8BK
(1)/Q
(2)/K
(3)/Q
(4)/K
(5)/Q
(6)/K
(7)/Q
(8)/K
Photosensitive
area size
Package
Reverse
voltage
VR max
(V)
(mm)
TO-18
1.1 × 1.1
2.4 × 2.4
TO-5
5
3.6 × 3.6
TO-8
5.8 × 5.8
Absolute maximum ratings
Operating
temperature
Topr
(°C)
-20 to +60
-40 to +100
-20 to +60
-40 to +100
-20 to +60
-40 to +100
-20 to +60
-40 to +100
Storage
temperature
Tstg
(°C)
-55 to +80
-55 to +125
-55 to +80
-55 to +125
-55 to +80
-55 to +125
-55 to +80
-55 to +125
*1: Window material, K=borosilicate glass, Q=quartz glass
*2: Refer to “Precautions against UV light exposure.”
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product
within the absolute maximum ratings.
Electrical and optical characteristics (Typ. Ta=25 °C, unless otherwise noted)
Type no.
Photosensitivity
S
(A/W)
Spectral
Peak
response sensitivity
range wavelength
λ
λp
S1226-18BQ
S1226-18BK
S1226-5BQ
S1226-5BK
S1226-44BQ
S1226-44BK
S1226-8BQ
S1226-8BK
He-Ne
laser
633 Min. Typ.
Typ. nm
(μA) (μA)
0.12
0.5 0.66
0.12
2.2 2.9
0.34
0.12
4.4 5.9
0.12
12
16
-
200 nm
λp
(nm)
190 to 1000
320 to 1000
190 to 1000
320 to 1000
190 to 1000
320 to 1000
190 to 1000
320 to 1000
(nm)
Min.
720
0.10
0.10
0.36
0.10
0.10
-
Short
circuit
current
Isc
100 lx
Terminal
Dark
Noise
Temp. Rise time
Shunt
capacitance
current
coefficient
tr
resistance equivalent
Ct
ID
power
of ID
VR=0 V
Rsh
VR=10 mV
VR=0 V
NEP
TCID RL=1 kΩ
VR=10 mV
max.
f=10 kHz
(times/°C)
Min. Typ.
(GΩ) (GΩ) (W/Hz1/2)
(μs)
(pF)
0.15
35
5
50
1.6 × 10-15
0.5
160
2
20
2.5 × 10-15
10
1
500
1
10
3.6 × 10-15
20
2
1200
0.5
5
5.0 × 10-15
(pA)
2
5
1.12
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