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VAC54
MINIATURE CADMIUM SULPHIDE PHOTOCONDUCTIVE CELL
LIGHT DEPENDENT RESISTOR
FEATURES
Miniature open frame package.
Epoxy coated.
Moisture resistant.
Spectral response similar
to the human eye.
Applications include dusk - dawn
lighting control.
SPECIFICATION AND PERFORMANCE
Model
VAC54 150 100
Vmax
(VDC)
Pmax
(mW)
Ambient
Temp (°C)
-30 ~ +80 590 50 ~ 140
Spectral
Peak
(nm)
Light
Resistance
at 10 lux
(kΩ)
34
Ø 0.5
Dark
Resistance
(MΩ)
2.4
3.4
Dimensions in millimetres
10
0.7
100
Response Time (ms)
Rise
Time
20 30
20
Gamma
Char.
T
Decay
Time
5.1
4.3
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.
2. Dark Resistance:
measured 10 seconds after pulsed 10 lux.
3. Gamma Characteristic:
between 10 lux and 100 lux and given by
log (R10/R100)
T =
log (100/10)
R10, R100 cell resistance at 10 lux and 100 lux.
The error of T is +0.1.
4. Pmax:
Max. power dissipation at ambient temperature of 25°C.
5. Vmax:
Max. voltage in darkness that may be applied to the cell
continuously.
– log (R10/R100)
Spectral Response
100
80
60
40
20
Relative Sensitivity (%)
0
0 400 500
600
Wavelength (nm)
Sheet 1 of 1
700 800
Illuminance vs Light Resistance
1000
100
10
Light Resistance (kΩ)
1
Illuminance (lux)
1001 10
Issue 0219
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