P380-7R Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – CbS photoconductive cell

VISIBLE DETECTOR
CdS photoconductive cell
Resin coating type (7R,10R type)
Standard type designed to withstand high voltage and high power
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
l Small size, thin substrate
l Low price
l Suitable for high voltage and high power application
Applications
l Auto dimmer for digital display, CRT and room illumination
l Automatic light on/off sensor
l Sensor for electronic toy and teaching aid material
s Absolute maximum ratings / Characteristics (Typ. Ta=25 °C, unless otherwise noted)
Absolute maximum ratings
Characteristics *¹
Type No.
Dimensional
outline
Supply
voltage
Power
dissipation
P
Ambient
temperature
Ta
Peak
sensitivity
wavelength
λp
Resistance *²
10 lx, 2856 K 0 lx *³
Min. Max. Min.
γ
100
 10
*⁴
Response time 10 lx *⁵
Rise time Fall time
tr
tf
7R type
(Vdc) (mW) (°C)
(nm) (kΩ) (kΩ) (MΩ) 100 to 10 lx (ms)
(ms)
P380-7R
200
50 -30 to +50 620
4.4 13
20
0.85
35
20
P722-7R
100
150 -30 to +60 560
2.5 7.5
0.5
0.70
50
40
P1195
➀
200
100 -30 to +70 550
50 150
20
0.90
40
10
P1202-12
P1202-16
100
200
150
100
-30 to +60
560
550
3.5 14
23 67
0.5
20
0.70
0.90
50
30
40
10
10R type
P722-10R
P1096-06
➁
200
100
300
100
-30 to +60
560
550
12 36
2.8 8.4
0.5
0.70
0.75
50
40
*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 removal of light of 10 lx.
*4: Typical gamma characteristics (within ±0.10 variations) between 100 lx to 10 lx
γ
100
10
=
log (R100) - log (R10)
log (E100) - log (E10)
E100, E10: illuminance 100 lx, 10 lx
R100, R10: 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 (resistance when
fully illuminated). The fall time is the time required for the sensor resistance to decay from the saturated conductance level to
37 %.