Flame Sensor - 850nm Photo Transistor

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Component Electronic Sensor Semiconductor

Internal Reference: SEN-010

Flame Sensor - 850nm Photo Transistor

This flame sensor is ideally used in fume cabinets, industrial heaters, or any other heat emitting device. It is able to detect the infrared light emitted by a flame or fire and discarding other light sources.

If you wish to receive Infrared data from a remote, it is suggested to use the VS1838 Infrared Receiver.

Flame Sensor Specs:

  • Open current voltage: 0.39V
  • Reverse voltage: 32V
  • Short-circuit current: 35 µA
  • Reverse light current: 25 to 35 µA
  • Reverse dark current: 5 to 30nA
  • Total capacitance: 10pF
  • Rais time and fall time: 45ns
  • View angle: 80 degree
  • Wavelength sensitivity: 850nm


Flame sensor LED


Can have digital output to micro with extra IC

Flame sensor Diagram


Analog Method with min components and YG1006 LED

Flame sensor diagram



/* Flame Sensor - Analog Output - Test Code */


void setup() {

Serial.begin(9600); //baud rate @ 9600


void loop() {

int sensorValue = analogRead(A0); // read sensor output value @ A0

Serial.println(sensorValue); // display it on serial monitor