LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 20000 ohms, but when they are illuminated with light resistance drops dramatically.




  • Can be used to sense Light
  • Easy to use on Breadboard or Perf Board
  • Easy to use with Microcontrollers or even with normal Digital/Analog IC
  • Small, cheap and easily available
  • Dimension 5mm


Question & Answer

Total 16 questions

Q: Can you kindly provide the datasheet? Questioned by Sakibul_Mowla, 17-May-2014

These products are not of any specific brands and always sold in the local market. There is no datasheet. Answered by A.R, 18-May-2014 09:12 AM

Q: this is out of stock :( when will u guys buy this again???????? Questioned by fahmid_zaman, 15-Oct-2014

Q: can u tell me where can i find it its out of stock and i need it its very very urgent please give a reply and tell me the market's name please and the shop's name if u remember its urgent Questioned by fahmid_zaman, 15-Oct-2014

Q: from where did u guys bought it ???? Questioned by fahmid_zaman, 15-Oct-2014

This was bought from local market. You can find these in any electronic parts shop. Answered by A.R, 16-Oct-2014 09:39 AM

Q: when will u guys buy more??? can u tell me the date???? please??? Questioned by fahmid_zaman, 16-Oct-2014

May be 20 th or 21st. Can't say the exact date. Sorry :( Answered by A.R, 19-Oct-2014 10:08 AM

Q: please notify me the resistance of LDR Questioned by Electrotanvir, 15-Dec-2014

Q: Please bring this LDR. I need this. Questioned by faisal84265, 08-May-2015

Q: Can you please provide me some LDR??? I need very badly Questioned by Showpnil, 11-May-2015

Q: ldr er shathe ki kono resisitor lagbe janale khushi hobo Questioned by fahian, 24-Sep-2016

প্রশ্নটি বোঝা গেল না। এলডিআর নিজেই তো একটি রেজিস্টর। Answered by A.R, 25-Sep-2016 10:13 AM

যদি কোনো ভারিয়েবল সার্কিট হয় তাহলে কাজের জন্য পাল্লা দিয়ে রেজিস্টর লাগাতে হবে এবং ohm বাড়াতে হবে। Answered by CyberPritom, 30-Apr-2017 00:46 AM

Lee Holo Light Depending register. Answered by CyberPritom, 30-Apr-2017 00:47 AM

Ldr Holo Light Depending register. Answered by CyberPritom, 30-Apr-2017 00:47 AM

Q: What is the resistance and light-dark conditions for this? please notify me soon. thanks Questioned by Ikram076, 02-Jan-2017

Q: What is the Resistance of the last in normal day light. Answer quick, because I need to order some. Answer quick. I have a project to work on. Questioned by CyberPritom, 30-Apr-2017

Q: এই এল.ডি.আর এ আলোর সাথে রোধ বাড়ে নাকি কমে? Questioned by SHABABANAM, 03-Sep-2017

কমে। Answered by A.R, 07-Sep-2017 10:46 AM

Q: Eta diye ki MOD-00055(Buzzer Module) er 'S' e pulse deya Jabe? Questioned by Talha_Zubair, 15-Sep-2017

-এলডিআর দিয়ে কিভাবে পালস দেবেন, ভাই? এলডিআর তো কোনো পালস আউটপুট দেয় না। এলডিআর একটি রেজিস্টরের মতো। আপনি একে কোনো কম্প্যারেটরের ইনপুটে লাগিয়ে যদি পালস জেনারেট করে নেন তাহলে সম্ভব। Answered by A.R, 17-Sep-2017 11:19 AM

Q: Is it 3 mm or 5 mm LDR ? Do you have any 3 mm LDR? Questioned by Shuvasis, 13-Feb-2018

We got this only. 5mm. Answered by A.R, 13-Feb-2018 15:07 PM

Q: I dont recieve my delivery Questioned by SamiulHaque, 29-Jun-2018

What's the order ID? Delivery related problems must be immediately informed to 01841110110. Answered by A.R, 01-Jul-2018 11:34 AM

Q: Don't you have 3mm ldr. I need this. Questioned by saimkhan123, 04-Oct-2020

Sorry, we don't have 3mm LDR. Answered by almamun3248, 04-Oct-2020 11:37 AM

Reviews & Ratings


1 Ratings / 2 Reviews






prosenjit.pollob, 18-Apr-2021

Resistance koto?


innoscriptatestemail@gmail.com, 12-Sep-2023

Hellooooooo there


Help: 09678110110

09.00am - 08.00pm (7 days a week)


Pay cash on delivery

Pay cash at your doorstep



All over Bangladesh


Warranty and Replacement

Up to 1 Year