What is a mini sensor switch

What is a mini sensor switch
Mini induction switch belongs to the category of optocouplers. Its function is to detect the position, motion, or existence status of objects through non-contact methods, and it is widely used in the field of automation control. The following is a summary of key information:
1, Basic Structure and Principle
compose
Internally integrated infrared emitting diodes and silicon phototransistors.
Infrared diodes emit light, while phototransistors receive infrared radiation reflected by objects and generate corresponding current signals based on the intensity of the reflection.
working principle
When an object approaches the sensor, the reflected infrared light is captured by the phototransistor. Different distances can cause changes in the photocurrent, triggering the switch action
II. Main Characteristics
physical parameters
Packaging form: Ultra small surface mount (SMD), compact size
Sensing distance: Typical value is 1mm, suitable for short distance precision detection
Electrical performance
High sensitivity, cut-off visible light wavelength interference, only responds to infrared band
Compliant with environmental standards: halogen-free (Br ≤ 900ppm, Cl ≤ 900ppm, Br% 2BCl ≤ 1500ppm), compliant with the EU REACH regulation
3, Typical application scenarios
office equipment
Printer paper detection (paper shortage/jam), label machine feeding control
Industrial Automation
Object detection (such as assembly line counting), positioning control, travel limit, and material breakage monitoring.
Other areas
Anti theft alarm, material level control, non-contact switch circuit