5mm 5537 LDR Light Dependent Resistor

Weight 0.002 kg

Photoresistance

Photoresistor, also known as LDR (Light Dependent Resistor), is a component that can change the resistance value according to the intensity of ambient light. It is usually made of semiconductor materials, has high sensitivity and reliability, and is often used in applications such as photosensitive sensors and optical switches.

Our photoresistor products have a variety of models to choose from, such as LDR5528, LDR5506, LDR5516, LDR5537 and LDR5539, etc., each model has its own unique resistance value and sensitivity. Our photoresistors are used in a variety of applications including ambient light control, automatic lighting systems, electronic toys, camera automatic exposure, solar products, and automatic headlight control, among others.

Our photoresistor products have the advantages of high sensitivity, fast response, precision and reliability, etc., which can provide stable and accurate light control for your application. Our photoresistor products are of high quality and low price, and can be customized according to your needs. Our team can provide you with professional technical support and after-sales service. If you have any questions about our products, welcome to contact our sales team.

Features

  • Quick Response
  • Reliable Performance
  • Epoxy or hermetical package 
  • Good Characteristic of Spectrum

Parameters

Product Name:Photoresistor
Materials:Metal, Electric Parts
Weight:8g
LDR Head Dia:5mm
Maximum Voltage: 150 Volt DC
Maximum Wattage: 100mW
Operating Temperature: -30 ~ +70 deg C
Spectral Peak: 540nm
Model:5537
Light Resistance (10 Lux): 18-50 Kohm
Dark Resistance: 2 Mohm
100λ10: 0.7
Response time: 20ms (Rise), 30ms (Down)

 

The 5537 has the following characteristics

  • Photo Resistance (16 ~ 50 KΩ)
  • Dark Resistance (2 MΩ) min 
  • Vmax – 150VDC
  • Pmax – 100mW
  • 5mm Package

This cadmium sulfide (CdS) or light dependent resistor (LDR) whose resistance is inversely dependent on the amount of light falling on it is known by many names including the photo resistor, photoresistor, photoconductor, photoconductive cell, or simply the photocell.

A typical structure for a photoresistor uses an active semiconductor layer that is deposited on an insulating substrate. The semiconductor is normally lightly doped to enable it to have the required level of conductivity. Contacts are then placed either side of the exposed area. The photo-resistor, CdS, or LDR finds many uses as a low cost photo sensitive element and was used for many years in photographic light meters as well as in other applications such as smoke, flame and burglar detectors, card readers and lighting controls for street lamps.