Busque con el número de pieza junto con el fabricante o la descripción
MQ-3 |
Click to view a larger image
| Part Number | MQ-3 |
| Manufacturer | ETC |
| Description | MQ-3 Semiconductor Sensor for Alcohol Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exist, The sensor’s conductivity is more h... |
| Features |
PH
Character
Sensing Resistance
Rs
Sensitivity S
Slope
α
Tem. Humidity
Condition Standard test circuit
Preheat time Ps=Vc2×Rs/(Rs+RL)2
MQ-3 Semiconductor Bakelite (Black Bakelite)
Alcohol gas 0.04-4mg/l alcohol
≤24V DC 5.0V±0.2V AC or DC
Adjustable
31Ω±3Ω（Room Tem.）
≤900mW
2KΩ-20KΩ(in 0.4mg/l alcohol )
Rs(in air)/Rs(0.4mg/L Alcohol)≥5
≤0.6(R300ppm/R100ppm Alcohol) 20℃±2℃；65%±5%RH Vc:5.0V±0.1V； VH: 5.0V±0.1V Over 48 hours
Vc VRL
RL VH
GND
The above is basic test circuit of the sensor. The sensor need to be put 2 voltage, heater voltage（VH）and test voltage（VC）. VH used to supply cer... |
| Document |
 MQ-3 Data Sheet
PDF 144.82KB |
Desde 2024. D4U Semiconductor.
|