参数资料
型号: S3931
元件分类: 光敏二极管
英文描述: PHOTO DIODE
封装: CERAMIC PACKAGE-4
文件页数: 1/4页
文件大小: 328K
代理商: S3931
S3979, S3931, S3932, S3270
Hamamatsu provides various types of one-dimensional PSD (Position Sensitive Detector) designed for precision distance measurement such as
displacement meters. S3979 has a 1 × 3 mm active area sealed in a TO-5 package.
S3931 and S3932 have an active area of 1 × 6 mm and 1 × 12 mm respectively, and are mounted on a compact ceramic package with a
transparent resin window. Variant types (S3931-01, S3932-01) with a visible-cut resin window are also available.
S3270 offers an active area longer than 30 mm, allowing position detection at a long distance. S3270 has a visible-cut resin window, and S3270-
01 with a transparent resin window is also available.
Features
l Superior position detection ability
l High reliability
l S3931, S3932: Easy to use 4-pin small ceramic package
l Long and narrow active area
S3270: 1 × 37 mm
Applications
l Displacement sensing
l Distance measurement
l Proximity switching
PSD
One-dimensional PSD
3 to 37 mm resistance length PSD for precision distance measurement
1
s General ratings / Absolute maximum ratings
Absolute maximum ratings
Active area
size
Reverse voltage
VR Max.
Operating temperature
Topr
Storage temperature
Tstg
Type No.
Package
Window
material *1
(mm)
(V)
(°C)
S3979
TO-5
K
1 × 3
S3931
R
1 × 6
S3932
R
1 × 12
-10 to +60
S3270 *2
Ceramic
R (B)
1 × 37
20
-10 to +75
-20 to +80
s Electrical and optical characteristics (Typ. Ta=25 °C, unless otherwise noted)
Spectral
response
range
λ
Peak
sensitivity
wavelength
λp
Photo
sensitivity
S
λ=λp
Interelectrode
resistance
Rie
Vb=0.1 V
Position
detection error *3
E
VR=5 V
light spot
φ200 m
Saturation
photocurrent *4
VR=5 V
RL=1 k
Dark
current
ID
VR=5 V
Temp.
coefficient
of
ID
TCID
Rise time
tr
VR=5 V
RL=1 k
Terminal
capacitance
Ct
VR=5 V
f=10 kHz
Position
resolution
*5
Type No.
(nm)
(A/W)
Min.
(k
)
Typ.
(k
)
Max.
(k
)
Typ.
(m)
Max.
(m)
(A)
Typ.
(nA)
Max.
(nA) (times/°C) (s)
(pF)
(m)
S3979
100
140
180
±15
±60
40
0.1
5
2.5
20
0.1
S3931
±30
±120
0.15 10
1.5
40
0.2
S3932
320 to 1100
920
0.55
30
50
80
±60
±240
100
0.2 20
3.0
80
0.3
S3270
700 to 1100
960
0.55
10
15
20
±100 ±400
300
0.5 20
1.15
1.0
100
2.8
*1: K: borosilicate glass, R: clear resin coating, R (B): visible-cut resin coating.
*2: Works with microscopic spot light detection.
*3: A range of 75 % of that from the center of the photosensitive surface to the edge.
*4: The upper limit of linearity of photocurrent in response to the quantity of light is defined as the point where the linearity
deviates by 10 %.
*5: Position resolution
This is the minimum detectable light spot displacement. The detection limit is indicated by the distance on the photosensitive
surface. The numerical value of the resolution of a position sensor using a PSD is proportional to both the length of the PSD
and the noise of the measuring system (resolution deteriorates) and inversely proportional to the photocurrent (incident
energy) of the PSD (resolution improves).
Light source: LED (900 nm)
Photocurrent: 1 A
Spot light size:
φ 200 m
Circuit system input noise: 1 V (1 kHz)
Frequency range: 1 kHz
Interelectrode resistance: Typical value (refer to the specification table)
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