VAC54
MINIATURE CADMIUM SULPHIDE PHOTOCONDUCTIVE CELL
LIGHT DEPENDENT RESISTOR
34
2.4
FEATURES
Miniature open frame package.
Epoxy coated.
Moisture resistant.
Spectral response similar
to the human eye.
Applications include dusk - dawn
lighting control.
Dimensions in millimetres
脴 0.5
4.3
3.4
5.1
SPECIFICATION AND PERFORMANCE
Model
Vmax
(VDC)
Pmax
(mW)
Ambient
Temp (擄C)
Light
Spectral Resistance
Dark
Peak
Resistance
at 10 lux
(nm)
(M鈩?
(k鈩?
Gamma
Char.
100
T
10
Response Time (ms)
Rise
Time
Decay
Time
VAC54
150
100
-30 ~ +80
590
50 ~ 140
20
0.7
20
30
Measuring Conditions
1.
Light Resistance:
measured at 10 lux with standard light A (2854k color
temperature) and 2h pre-illumination at 400-600 lux prior
to testing.
Dark Resistance:
measured 10 seconds after pulsed 10 lux.
Gamma Characteristic:
between 10 lux and 100 lux and given by
log (R10/R100)
T=
鈥?log (R10/R100)
log (100/10)
R10, R100 cell resistance at 10 lux and 100 lux.
The error of T is +0.1.
4.
5.
Pmax:
Max. power dissipation at ambient temperature of 25擄C.
Vmax:
Max. voltage in darkness that may be applied to the cell
continuously.
Illuminance vs Light Resistance
Spectral Response
Relative Sensitivity (%)
100
Light Resistance (k鈩?
80
60
40
20
0
0 400 500 600 700 800
Wavelength (nm)
100
1000
2.
3.
10
1
1
10
Illuminance (lux)
100
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Issue 0219
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