RC-SPC1K is an thick film technology rain sensor.
This device is realized in Allumina (AL2O3) substrate, this material is endowed a big reliability from an electrical thermal point of view.
The sensor consists of three parts :
1) Capacitive sensor (Face A)
2) Heater generator
3) Temperature Sensor
The Face A is the sensitivity area (capacitive sensor) this area is ex post to natural agent (rain) in dry condition the value of the capacitor is nominal 105 pF,
In presence of the rain the capacitance goes to high valued respect the dry condition the ratio changing is over 420%, in the table N.1 you can verify the capacitance change characteristics.
The Face B is present the heating circuit and the NTC component.

Keywords: wholesale other electronic components, rain sensors