VISIBLE DETECTOR
CdS photoconductive cell
Resin coating type (5R type)
Standard type designed for general-purpose, wide application
CdS photoconductive cells utilize photoconductive effects in semiconductors that decrease their resistance when illuminated by light. These
sensors are non-polar resistive elements with spectral response characteristics close to the human eye (luminous efficiency), thus making their
operating circuits simple and small.
Features
Applications
l
Small size, thin package
l
Low price
l
Wide range of sensor lineup
l
Programed electronic shutter and stroboscope light control
for compact camera
l
Auto dimmer for digital display, CRT and room illumination
l
Sensor for automatic light on/off
l
Sensor for electronic toy and teaching aid material
s
Absolute maximum ratings / Characteristics (Typ. Ta=25 擄C, unless otherwise noted)
Peak
Power
Ambient
sensitivity
Supply
dissipation
temperature
wavelength
voltage
P
Ta
lp
Absolute maximum ratings
Characteristics *
Cell resistance *
0
lx
*
!
Response time 10
lx
*
#
Rise time Fall time
tr
tf
(ms)
60
40
50
40
(ms)
25
30
40
10
Type No.
10
lx,
2856 K
Min.
(kW)
5
g
*
"
Max.
Min.
(Vdc)
(mW)
(擄C)
(nm)
(kW)
(MW)
100 to 10
lx
P687-02
30
-30 to +50
620
20
5.0
0.70
100
P1201-04
200
50
-30 to +60
540
50
20
0.90
P1201-06
100
P1241-04
3
9
0.2
0.70
P1241-05
50
-30 to +60
560
8
24
0.5
0.70
P1241-06
5
20
0.5
0.75
30
P1444
10
50
5.0
100
-30 to +50
620
0.85
P1445
48
140
20
*1: All characteristics are measured after exposure to light (100 to 500
lx)
for one to two hours.
*2: The light source is a standard tungsten lamp operated at a color temperature of 2856 K.
*3: Measured 10 seconds after shutting off the 10
lx
light.
*4: Typical gamma characteristics (within 鹵0.10 variations) between 100
lx
to 10
lx
緯
100
=
10
log (R
100
) - log (R
10
)
log (E
100
) - log (E
10
)
E
, E
: illuminance 100
lx,
10
lx
R
, R
: resistance at 100
lx
and 10
lx
respectively
*5: The rise time is the time required for the sensor resistance to reach 63 % of the saturated conductance level (when fully
illuminated). The fall time is the time required for the sensor resistance to decay from the saturated conductance level to
37 %.
1
1
2
