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LDR 6MM-7MM Photoresistance

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LDR(Light Dependent Resistor) also known as photoresistor is a resistor whose resistance varies with the amount of light falling on it. This is a medium-size LDR with a size of 7mm.

To use, connect one side of the photocell (either one, its symmetric) to power (for example 5V) and the other side to your microcontroller’s analog input pin. Then connect a 10K pull-down resistor from that analog pin to ground. The voltage on the pin will be 2.5V or higher when its light out and near ground when its dark.

This sensor can be used for making a light sensor, color sensor, object sensor, line sensor, etc .

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Description

Photoresistor 7MM LDR Photo Resistors

Photoresistor is a resistor which made of semi-conductor material,and the conductance changes with luminance variation .The photoresistor can be manufactured with different figures and illuminate area based on this characteristic.

Technical parameter for 7mm photocell sensor

Specification Type Max
Voltage (VDC)
Max
power (mw)
Environmental
temperature
Spectrum
peak value  (nm)
φ7 MJ7516 150  150   -30~+70°C  540
 MJ7517 150 150   -30~+70°C  540
MJ7528 150 150 -30~+70°C  560
MJ7537 150 150 -30~+70°C 560
MJ7539 150 150 -30~+70°C  560

 

Specification Light
resistance
(10Lux)
(KΩ)
Dark
resistance
(MΩ)
r100/10 Response time
(ms)
Illuminance
resistance
characteristic
  Increase   Decrease
φ7 5-10  0.6  0.6  30  30      2
   10-20  1  0.6  30  30  3
20-30 2 0.7 30 30 4
30-50 4 0.8 30 30 4
50-100 8 0.8 30 30 6

Related Product Photo Show:

Photoresistor 7mm Ldr Light Dependent Resistor for Arduino (MJ7539)
Photoresistor 7mm Ldr Light Dependent Resistor for Arduino (MJ7539)

 

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