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Light Dependent Resistor

1、Plastic cover Big Size Photoresistor(LDR)

big photoresistor.jpg

A photoresistor can be applied in light-sensitive detector circuits and light-activated and dark-activated switching circuits acting as a resistance semiconductor. In the dark, a photoresistor can have a resistance as high as several megaohms (MΩ), while in the light, a photoresistor can have a resistance as low as a few hundred ohms. If incident light on a photoresistor exceeds a certain frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electrons (and their hole partners) conduct electricity, thereby lowering resistance. The resistance range and sensitivity of a photoresistor can substantially differ among dissimilar devices. Moreover, unique photoresistors may react substantially differently to photons within certain wavelength bands. The diameter of big size plastic cover LDR can be 12-20mm.

2、Metal Sealed Photoresistor(LDR)

metal photoresistor.jpg

Hermetically sealed metal photoresistor are a special photoresistor set in an airtight environment with a special metal and glass window. The closed environment is filled with nitrogen, which completely isolates the photoresistor from the outside world, thus effectively extending its life cycle. It is broadly applied in high/low temperature, high humidity, acid, alkali and ultraviolet environments.SICUBE has the ability to make all kinds of metal sealed photoresitor(LDRs).7mm metal photoresistor is the most popular one in the market.

3、CdS PhotoCell(LDR)

photoresistor.jpg

CdS photoresistor (also known as a light-dependent resistor, LDR, or photo-conductive cell) is a passive component that decreases resistance with respect to receiving luminosity (light) on the component's sensitive surface. The resistance of a photoresistor decreases with increase in incident light intensity; in other words, it exhibits photoconductivity. 

Specification:

ModelDia(mm)V max(V DC)P max(mW)Ambient TempSpectral PeakPhoto Resistance
Dark Resistance
rResponse Time





(nm)10Lux(kΩ)
(MΩ)
Rise TimeDecay Time
GL4526415050-30-705405-100.50.63030
GL453715050-30-705408-2020.73030
GL454815050-30-7054045-14050.83030
GL5516515090-30-705405-100.20.63030
GL5528150100-30-705408-2010.72030
GL5537150100-30-7054018-5020.72030
GL5539150100-30-7054030-9050.82030
GL5549150100-30-7054045-140100.82030
GL5616d150100-30-705605-1010.63030
GL5626d150100-30-705608-2020.62030
GL5637d150100-30-7056018-5050.72030
GL5639d150100-30-7056030-9080.82030
GL5649d150100-30-7056050-160200.82030
GL5526F5150100-30-705408-200.50.63030
GL5537F150100-30-7054018-5010.73030
GL5549F150100-30-7054045-14050.83030
GL75167150100-30-705604-100.50.63030
GL7528150150-30-705608-2020.73030
GL7638150150-30-7056018-5050.83030
GL7649150150-30-7056045-140100.83030
GL1252812250200-30-705608-2020.63030
GL12537250200-30-7056018-5050.73030
GL12549250200-30-7056045-140100.83030
GL2052820500500-30-705608-2020.63030
GL20537500500-30-7056018-5050.73030
GL20549500500-30-7056045-140100.83030

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