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5mm LDR (Light Dependent Resistor)

5mm LDR (Light Dependent Resistor)-Robocraze
5mm LDR (Light Dependent Resistor)-Robocraze
5mm LDR (Light Dependent Resistor)-Robocraze
  • 5mm LDR (Light Dependent Resistor)-Robocraze
  • 5mm LDR (Light Dependent Resistor)-Robocraze
  • 5mm LDR (Light Dependent Resistor)-Robocraze

5mm LDR (Light Dependent Resistor)

Regular price
Rs. 14
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Rs. 14
Regular price
Rs. 17
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  • ⚡ Dispatched within 24 hours
  • 🚚 Free shipping on orders above Rs 500/-
  • 💰 Earn RC Coins on every purchase
  • 🛠️ Dedicated Technical Support Team
  • Miniature open frame package.
  • Proxy coated.
  • Moisture resistant.
  • The spectral response similar to the human eye.
  • 5mm LDR (Light Dependent Resistor)

    A 5mm LDR photoresistor sensor is made of a high resistance semiconductor. If light falling on the device is of high enough frequency, photons absorbed by the semiconductor give the bound electron enough energy to jump into the conduction band. The resulting free electron (and its hole partner) conduct electricity, thereby lowering resistance. A photoelectric device can be either intrinsic or extrinsic. An intrinsic semiconductor has its own charge carriers and is not an efficient semiconductor, for example, silicon.

    In intrinsic devices, the only available electrons are in the valence band, and hence the photon must have enough energy to excite the electron across the entire bandgap. Extrinsic devices have impurities, also called dopants, added whose ground state energy is closer to the conduction band; since the electrons do not have as far to jump, lower energy photons (that is, longer wavelengths and lower frequencies) are sufficient to trigger the device. If a sample of silicon has some of its atoms replaced by phosphorus atoms (impurities), there will be extra electrons available for conduction.

    This is an example of an extrinsic semiconductor. Photoresistors are basically photocells. Sensitivity The sensitivity of a photodetector is the relationship between the light falling on the device and the resulting output signal. In the case of a photocell, one is dealing with the relationship between the incident light and the corresponding resistance of the cell.

    Applications:

    • Camera Exposure Control
    • Auto Slide Focus
    • Photocopy Machines
    • Colorimetric Test Equipment 
    • Automated Rear View Mirror Digital 
    • Automatic Headlight Dimmer
    • Night Light Control
    • Street Light Control 

    Package Includes:

    • 5mm LDR (Light Dependent Resistor)

    Specification:

    Max Voltage 150 Vdc
    Max Power 100mW
    Spectral Peak 540nm
    Light Resistance at 10Lux  20-30 Kohm