P2405 데이터 시트보기 (PDF) - Hamamatsu Photonics
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P2405 Datasheet PDF : 2 Pages
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VISIBLE DETECTOR
CdS photoconductive cell
Resin coating · dual type
Low cost dual-element sensor with standard size
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.
Dual-element sensors can be used to compare the signal from each element or perform signal processing by using a separation circuit.
Features
l Thin substrate
l Low price
Applications
l Sensor for various control device
s Absolute maximum ratings / Characteristics (Typ. Ta=25 °C, unless otherwise noted, per 1 element)
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
γ
100
10
*4
Response time 10 lx *5
Rise time Fall time
tr
tf
Min. Max. Min.
(Vdc) (mW) (°C)
(nm) (kΩ) (kΩ) (MΩ) 100 to 10 lx (ms)
(ms)
5R type
P1395-01
➀
50
25 -30 to +60 550
5
15
0.1
0.60
120
250
7R type
P2405
P2478-01
➁
➂
100
50
-30 to +60
520
530
45 135
25 75
20
1
0.90
0.70
50
20
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 shutting off the 10 lx light.
*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 (when fully
illuminated). The fall time is the time required for the sensor resistance to decay from the saturated conductance level to
37 %.
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