Light Dependent Resistor(LDR)

Plastic cover Big Size Photoresistor(LDR)

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 covers LDR can range from 12-20mm.

Metal Sealed Photoresistor(LDR）

Hermetically sealed metal photoresistors are special photoresistors 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 temperaturse, high humidity, acid, alkali, and ultraviolet environments. SICUBE creates all kinds of metal sealed photoresistors (LDRs). The 7mm metal photoresistor is the most popular one in the market.

CdS PhotoCell(LDR)

The 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 an increase in incident light intensity; in other words, it exhibits photoconductivity. 

Specification:

Model	Dia(mm)	V max(V DC)	P max(mW)	Ambient Temp	Spectral Peak	Photo Resistance		Dark Resistance		r	Response Time
					(nm)	10Lux(kΩ）		(MΩ)			Rise Time	Decay Time
GL4526	4	150	50	-30-70	540	5-10		0.5		0.6	30	30
GL4537		150	50	-30-70	540	8-20		2		0.7	30	30
GL4548		150	50	-30-70	540	45-140		5		0.8	30	30
GL5516	5	150	90	-30-70	540	5-10		0.2		0.6	30	30
GL5528		150	100	-30-70	540	8-20		1		0.7	20	30
GL5537		150	100	-30-70	540	18-50		2		0.7	20	30
GL5539		150	100	-30-70	540	30-90		5		0.8	20	30
GL5549		150	100	-30-70	540	45-140		10		0.8	20	30
GL5616d		150	100	-30-70	560	5-10		1		0.6	30	30
GL5626d		150	100	-30-70	560	8-20		2		0.6	20	30
GL5637d		150	100	-30-70	560	18-50		5		0.7	20	30
GL5639d		150	100	-30-70	560	30-90		8		0.8	20	30
GL5649d		150	100	-30-70	560	50-160		20		0.8	20	30
GL5526F	5	150	100	-30-70	540	8-20		0.5		0.6	30	30
GL5537F		150	100	-30-70	540	18-50		1		0.7	30	30
GL5549F		150	100	-30-70	540	45-140		5		0.8	30	30
GL7516	7	150	100	-30-70	560	4-10		0.5		0.6	30	30
GL7528		150	150	-30-70	560	8-20		2		0.7	30	30
GL7638		150	150	-30-70	560	18-50		5		0.8	30	30
GL7649		150	150	-30-70	560	45-140		10		0.8	30	30
GL12528	12	250	200	-30-70	560	8-20		2		0.6	30	30
GL12537		250	200	-30-70	560	18-50		5		0.7	30	30
GL12549		250	200	-30-70	560	45-140		10		0.8	30	30
GL20528	20	500	500	-30-70	560	8-20		2		0.6	30	30
GL20537		500	500	-30-70	560	18-50		5		0.7	30	30
GL20549		500	500	-30-70	560	45-140		10		0.8	30	30

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