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 Variety of package size

l Highly resistant to moisture and dust

Applications

l Sensor for office machine

l Safety device for heating system and boiler

(flame monitor for oil burner)

l Night/day check sensor and sunlight sensor for air conditioner

l Alarm and safety sensor

VISIBLE

DETECTOR

CdS photoconductive cell

Hermetically sealed for high reliability

Metal package type

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

Absolute maximum ratings

Resistance *

Supply

voltage

Power

dissipation

P

Ambient

temperature

Ta

Peak

sensitivity

wavelength

lp

10 lx, 2856 K

"

Rise time

tr

Fall time

tf

Type No.

Dimensional

outline

(Vdc)

(mW)

(°C)

(nm)

Min.

(kW)

Max.

(kW)

Min.

(MW)

100 to 10 lx

(ms)

(ms)

5M type (TO-18)

P1114-01

630

13

39

1

60

25

P1114-04

➀

100

30

-30 to +50

570

15

45

10

0.80

40

20

6M type (f5.5)

P930

➁

150

50

-30 to +70

560

7

23

0.5

0.68

60

90

8M type (TO-5)

P201B

-30 to +50

560

21

63

200.8525

20

P201D

100

-30 to +60

520

20

60

100.9030

10

P368

14

43

P380

200

50

-30 to +50

620

4.4

13

20

0.85

35

20

P467

-30 to +60

520

8

24

5

0.90

50

20

P534

➂

100

100

-30 to +80

560

1.3

3.7

0.05

0.55

70

100

12M type (TO-8)

P621

150

570

1.3

3.7

0.3

0.75

80

40

P3872

➃

400

300

-30 to +60

540

5

15

1.0

0.80

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 removal of light of 10lx.

*4: Typical gamma characteristics (within±0.10 variations) between 100lx to 10lx

*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 %.

γ

=

100

10

1