5mm LDR (Pack of 10)

(8 customer reviews)

In stock

SKU: 24443
  1. Diameter: 5mm
  2. No. of Pins: 2
  3. Type of Mounting: PCB Through Hole
  4. Maximum Operating Temperature: +800°C (Approx.)
  5. Dark resistance:1-20 Mohm


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Category: Light Dependent Resistors (LDR)
Tags: Photosensitive, Photoresistor, Ambient Brightness Sensor

This 5mm LDR changes resistance with the change in the ambient light exposure on the surface of the sensor. LDR (Light Dependent Resistor) is a type of photocell which finds excellent use in light sensing device application, whether it is automatic outdoor light ON/OFF switch or Indoor automatic light switch.

The LDR 5mm sensor works best in both Light and dark regions. Light-dependent resistors or photoresistors are a staple of electronics. If you need a way to sense the level of ambient light then there is no easier way to do it. As the light on the sensor increases then the resistance across the two leads decreases.

Two Cadmium Sulphide (CDs) PhotoConductive Cells with spectral responses similar to that of the human eye. Cell resistance falls with increasing light intensity. Applications of this product include smoke detection, Automatic lighting control, batch counting, and burglar alarm systems.

To know more about photo-resistor, click here. WHAT IS PHOTO-RESISTOR??
 Analog Applications:
  1. Camera Exposure control
  2. Auto slide focus – dual cell
  3. Photocopy machines – the density of the toner
  4. Colorimetric Test Equipment
  5. Densitometer
  6. Electronics scales – dual cell
  7. Automatic gain control – modulated light source
  8. Automated Rear View Mirror
Digital Applications:
  1. Automatic Headlight Dimmer
  2. Nightlight control
  3. Oil burner flame out
  4. Streetlight control
  5. Absence / Presence (Beam breaker)
  6. Position sensor

Package Includes :

10 x 5mm LDR.
Diameter (mm):


No. of Pins


Dark resistance

1-20M ohm

Shipping Weight 0.04 kg
Shipping Dimensions 4 × 3 × 2 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 8 reviews

4.6 overall

Add a review

  1. abidink08 (verified owner)

    Working good but after connecting 10k resistor with A0 pin/RbW7#cb


  2. ratikantadalabehera (verified owner)

    Good products. Early delivery.


  3. Karan Rathore

    Bought at market price

    Karan Rathore

  4. Usman

    What is shipping duration


  5. sayandas8101@gmail.com



  6. mayurkumarchauhan19@gmail.com

    ok but one are not working


  7. Khan abdul ahad sohail ahmed


    Khan abdul ahad sohail ahmed

  8. yash Singh


    yash Singh

Questions and answers of the customers

    This LDR GL5506,GL5516Or not
  1. 0 votes
    Q This LDR GL5506,GL5516Or not answer now
    Asked by pirthvirajrmc on January 4, 2024 11:48 am

    Yes it is GL5506,GL5516Or 

  2. What value of resister to be added in series to tr... Read more
  3. 0 votes
    Q What value of resister to be added in series to trigger a 5v relay using one 2222 transister answer now
    Asked by ajit_amishra on December 25, 2019 6:41 pm

    First thing, a single resistor will not trigger... Read more

Only registered users are eligible to enter questions
Country Of Origin: China

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