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Panasonic Laser Particulate Matter Sensor | New Product Brief

April 29, 2020 by Mouser Electronics

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.

Panasonic Laser Particulate Matter Sensor

Panasonic’s SN-GCJA5 Laser Particulate Matter Sensors are easy to use and provide high accuracy air quality measurements in a compact footprint. The sensors integrate an MCU, laser diode, photodiode, and micro-fan to simplify design, and uses I2C or UART to send converted mass density values to the host. 

The micro-fan is more efficient at drawing in air than the heating elements used in most sensors, and the laser diode provides higher accuracy measurements than an LED-based sensor. Both the fan and laser are controlled by the MCU to extend product life and improve efficiency. 

The SN-GCJA5 can detect particles as small as 0.3µm and provides a fast response. 

  • Highly integrated: MCU, laser diode, photodiode, micro-fan 
    • Dimensions: 37mm x 37mm x 12mm 
  • Host interfaces: I2C and UART 
    • Outputs: PM1.0, PM2.5, and PM10 mass-density values. 
  • Micro-fan draws in air more efficiently than a heating element 
  • Laser diode enables more accurate measurements than LED-based sensors 
    • Accuracy: ±10% (35µg/m3 <, < 1,000µg/m3) 
  • MCU controls fan and laser diode for improved efficiency and product life 
  • High-sensitivity and quick response 
    • 0.3μm minimum detectable particle 
    • 1 second response time 

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