Overview
Light dependent resistors, LDRs or photoresistors are often used in circuits where it is necessary to detect the presence or the level of light. They can be described by a variety of names from light dependent resistor, LDR, photoresistor, or even photo cell, photocell or photoconductor.
Feature
Small volume
Fast response
Good spectrum characteristic
Standard Type and Specifications
Specification | Type | Maximum Voltage | Maximum power | Spectrum peak value | Light resistance (10Lux) (KΩ) | Dark resistance (MΩ) | Response time (ms) | |
Increase | Decrease | |||||||
φ 3 series
| GL3516 | 100 | 50 | 540 | 5- 10 | 0.6 | 30 | 30 |
GL3526 | 100 | 50 | 540 | 10- 20 | 1 | 30 | 30 | |
GL3537-1 | 100 | 50 | 540 | 20- 30 | 2 | 30 | 30 | |
GL3537-2 | 100 | 50 | 540 | 30- 50 | 3 | 30 | 30 | |
GL3547-1 | 100 | 50 | 540 | 50- 100 | 5 | 30 | 30 | |
Applications
They have a very simple structure and they are low cost and rugged devices.They are widely used in many different items of electronic equipment including photographic light meters, fire or smoke alarms as well as burglar alarms, and they also find uses as lighting controls for street lamps.
FAQ
1. What is the size for LDR?
φ3 series, φ4 series, φ5 series, φ7 series, φ10 series, φ12 series, φ20 series.
2. What is your production capitable?
5 million Pieces per Month
3. Which of the photoresistor's will be the best to allow an led to only come on in complete darkness
It depends on the circuit you intend to use.
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