MQ-2

Question

Good day. i am looking for the mq-2 lbr. with out the board just the sensor . with its points. Thank you 
 Attachments:

mp2100 · Answer

I don't know where you are located, but I assume ebay could work for you. I've noticed some sellers have the bare sensor without the board. I assume most/all are from China.

For example:

https://www.ebay.com/itm/MQ2-MQ4-MQ5-MQ7-MQ9-MQ6-MQ8-MQ135-Gas-Propane-Methane-Butane-Sensor-With-Base-S/182400157454?ha…

that one has a variety of MQ-x sensors.

This one is specifically has the MQ-2:

https://www.ebay.com/itm/MQ2-Gas-Sensor-for-LPG-Propane-Hydrogen/181266971481?hash=item2a345a7b59:g:aLUAAOSwuMFUj~EN

I have NOT bought from these vendors, so I'm not endorsing them. I'm just saying that there are several sellers on ebay you could try.

dougw · Answer

These types of sensor can wear out, so it might be better to install a socket:

Note that the socket has a different footprint than the sensor.

Also note that some MQ sensors have different pin diameters even though the pitch is the same.

I put both socket and sensor footprints on the PCB.