Light Sensors

The light sensor is a passive device that converts the light energy into an electrical signal output. Light sensors are more commonly known as Photoelectric Devices or Photo Sensors because they convert light energy (photons) into electronic signal (electrons). Phototransistors, photoresistors, and photodiodes are some of the more common type of light intensity sensors.


Photoelectric sensors use a beam of light to detect the presence or absence of an object. It emits a light beam (visible or infrared) from its light-emitting element. A reflective-type photoelectric sensor is used to detect the light beam reflected from the target. A beam of light is emitted from the light emitting element and is received by the light receiving element. Both the light emitting and light receiving elements are contained in a single housing. The sensor receives the light reflected from the target.


A phototransistor, on the other hand, uses the level of light it detects to determine how much current can pass through the circuit. So, if the sensor is in a dark room, it only lets a small amount of current to flow. If it detects a bright light, it lets a larger amount of current flow. A photoresistor is made of cadmium sulphide whose resistance is maximum when the sensor is in dark. When the photoresistor is exposed to light, its resistance drops in proportion to the intensity of light. When interfaced with a circuit and balanced with potentiometer, the change in light intensity will show up as change in voltage. These sensors are simple, reliable, and cheap, used widely for measuring light intensity.


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Contract pricing display is unavailable at the moment. Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.

  Manufacturer Part No Order Code Manufacturer / Description
Availability Price For
Price
Quantity
KPS-3227SP1C
KPS-3227SP1C - Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 0.4 Vce(sat)

2373478

KINGBRIGHT

Ambient Light Sensor, KPS Series, Phototransistor, 60 Vceo, 0.4 Vce(sat)

SENSOR, OPTICAL, PHOTOTRANSISTOR, NPN; Sensor Output:Voltage; Wavelength of Peak Sensitivity:580nm; Supply Voltage Min:0.4V; Supply Voltage Max:60V; Ambient Light Sensor Case Style:SMD; No. of Pins:4Pins; Operating Temperature Min:-40°C; Operating Temper

  • 5,180 available for 4 - 6 business days delivery
+ Check Stock & Lead Times

  • 5,180 available for 4 - 6 business days delivery: (UK stock) Order before 18:30 Mon-Fri (excluding National Holidays)

More stock available week commencing 9/11/20

Restricted Item
ISL76671AROZ-T7A
ISL76671AROZ-T7A - Special Function IC, Ambient Light Sensor, 1.8 V to 3 V, ODFN-6

2544741

RENESAS

Special Function IC, Ambient Light Sensor, 1.8 V to 3 V, ODFN-6

AMBIENT LIGHT SENSOR, AEC-Q100, ODFN-6; Sensor Output:Voltage; Wavelength of Peak Sensitivity:550nm; Supply Voltage Min:1.8V; Supply Voltage Max:3.3V; Ambient Light Sensor Case Style:ODFN; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Tem

  • 387 available for 4 - 6 business days delivery
+ Check Stock & Lead Times

  • 387 available for 4 - 6 business days delivery: (UK stock) Order before 18:30 Mon-Fri (excluding National Holidays)

More stock available week commencing 19/10/20

Restricted Item
VEML6075
VEML6075 - Light Sensor, UVA and UVB, I2C, 1.7 V to 3.6 V

2523611

VISHAY

Light Sensor, UVA and UVB, I2C, 1.7 V to 3.6 V

LIGHT SENSOR, DIGITAL / I2C; Sensor Output:Digital (I2C); Sensing Range Max:365mm; Supply Voltage DC Min:1.7V; Supply Voltage DC Max:3.6V; Output Current:400µA; Product Range:UV Sensor

No Longer Manufactured

Restricted Item
SI1153-AA00-GM
SI1153-AA00-GM - Integrated Ambient Light Sensor, 1.6V to 3.6V Supply, DFN-10

2769154

SILICON LABS

Integrated Ambient Light Sensor, 1.6V to 3.6V Supply, DFN-10

AMBIENT LIGHT SENSOR, I2C, DFN-10; Supply Voltage Min:1.6V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:DFN; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:Si1153 Series; SVHC:No SVHC (12-J

No Longer Manufactured

Re-reel
Restricted Item
AMS302.
AMS302. - Ambient Light Sensor, High Sensitivity, Through Hole, 1.5 Vdc to 6 Vdc

2448039

PANASONIC

Ambient Light Sensor, High Sensitivity, Through Hole, 1.5 Vdc to 6 Vdc

LIGHT SENSOR, 6V, 580NM, THD; Sensor Output:Current; Wavelength of Peak Sensitivity:580nm; Supply Voltage Min:1.5V; Supply Voltage Max:6V; Ambient Light Sensor Case Style:Through Hole; No. of Pins:2Pins; Operating Temperature Min:-30°C; Operating Tempera

No Longer Manufactured

Restricted Item
APDS-9301-020
APDS-9301-020 - Ambient Light Sensor, APDS-9301, Miniature, Digital, chipLED SMD, 2.7 Vdc to 3.6 Vdc

2497389

BROADCOM

Ambient Light Sensor, APDS-9301, Miniature, Digital, chipLED SMD, 2.7 Vdc to 3.6 Vdc

AMBIENT LIGHT PHOTO SENSOR, DIGITAL; Sensor Output:I2C Digital; Wavelength of Peak Sensitivity:-; Supply Voltage Min:2.7V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:ChipLED; No. of Pins:6Pins; Operating Temperature Min:-30°C; Operating Tem

No Longer Manufactured

Cut Tape
Packaging Options
Suggested replacement for:2497389
2497389RL in Re-reel
Restricted Item
MAX44000GDT+T
MAX44000GDT+T - IC, Special Function, Ambient Light Sensor, 1.7 V-3.6 V supply, OTDFN-6

2514191RL

MAXIM INTEGRATED PRODUCTS

IC, Special Function, Ambient Light Sensor, 1.7 V-3.6 V supply, OTDFN-6

AMBIENT/INFRARED PROXIMITY SENSOR, OTDFN; Supply Voltage Min:1.76V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:OTDFN; No. of Pins:6Pins; Operating Temperature Min:-40°C; Operating Temperature Max:105°C; Product Range:MAX44000 Series; SVHC:N

No Longer Manufactured

Re-reel
Packaging Options
Suggested replacement for:2514191RL
2514191 in Cut Tape
Restricted Item