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 package

l Low price

l Wide range of sensor lineup

Applications

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

VISIBLE

DETECTOR

CdS photoconductive cell

Standard type designed for general-purpose, wide application

Resin coating type (5R type)

s

Absolute maximum ratings / Characteristics (Typ. Ta=25 °C, unless otherwise noted)

Absolute maximum ratings

Supply

voltage

Power

dissipation

P

Ambient

temperature

Ta

Peak

sensitivity

wavelength

λp

10 lx, 2856 K

4

Rise time

tr

Fall time

tf

Type No.

(Vdc)

(mW)

(°C)

(nm)

Min.

(kΩ)

Max.

(kΩ)

Min.

(MΩ)

100 to 10 lx

(ms)

(ms)

P201D-5R

50

-30 to +60

520

48

140

20

0.90

30

10

P380-5R

30

-30 to +50

620

12

36

20

0.85

35

20

P722-5R

-30 to +60

5.3

15

0.5

0.70

50

40

P1082-03

70

-30 to +80

560

13

39

0.2

0.55

100

150

P1201

20

60

P1201-01

100

70

-30 to +80

540

30

90

5.0

0.75

40

30

*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 ±0.10 variations) between 100 lx to 10 lx

*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 %.

γ

=

100

10