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LDR Sensor

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PROD Model:φ10
Maximum Applied Voltage: the maximum voltage that can be continuously applied to a component in the dark
Dark Resistance: resistance value at 10 seconds after 10Lux illumination is turned off
Maximum Power Consumption: maximum power consumption when the ambient temperature is 25 ° C
Bright Resistance: after 2 hours of exposure with 400-600Lux light, the test value under 10Lux light of standard light source (color temperature 2856K)
γ Value: logarithm of the ratio of the standard resistance value at 10Lux illuminance to 100Lux illuminance
γ= Lg(R10/R100) /Lg (100/10) =Lg(R10/R100)


A photoresistor is a resistor made of a semiconductor material whose conductivity changes as light illuminance changes. This property is used to make photoresistors of different shapes and areas. Photoresistor is widely used in toys, lamps, cameras and other industries.


 Epoxy encapsulation

 Good reliability

 Small size

 High sensitivity

 Fast response

 Good spectral characteristics


SpecificationTypeMaximum VoltageMaximum power



Spectrumpeak valueLight resistance(10Lux)(KΩ)Dark resistance(MΩ)Response time(ms)
φ10 seriesGL10516200200-30~+70℃5605- 1013030
GL10528200200-30~+70℃56010- 2023030
GL10537-1200200-30~+70℃56020- 3033030
GL10537-2200200-30~+70℃56030- 5053030
GL10539200200-30~+70℃56050- 10083030





Lead sulfide (PbS) and indium antimonide (InSb) LDRs (light-dependent resistors) are used for the mid-infrared spectral region.


1. What is the test condition?

Light resistance Irradiate by 400-600Lux light for two hours, then test with 10Lux under standard light source A(as colour temperature 2856K)

Dark resistance Refer to the resistance value ten seconds after the 10Lux light is shut up.

2. Samples.

Free samples are available for testing.

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SENBA Sensing Technology Co.,Ltd.(stock code:300701), was founded in 2005, with the focus on producing the top quality photoelectric components, such as PIR sensors, Photoresistors,Light Sensors, Flame detectors etc. Our strategic goal is to master the core technology.