DHT11 Temperature and Humidity sensor. What is the NC connection for?


I have bought this sensor: http://www.ebay.co.uk/itm/161357774794?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

As you can see in the diagram it has a N/C connection? Does this stand for 'no connection'? Why is it there?

The DHT11 described here only has 3 pins (+5V/GND/Data): http://playground.arduino.cc/main/DHT11Lib



NC stands for NOT CONNECTED,

If you solder it to a pcb it is an extra support?

OR there might be related sensors (or housing) that might use that extra pin..

Thanks for the reply.


There is a subtle difference in specification between "Not Connected" and "Do Not Connect", which latter may be a part of the chip that for whatever reason, requires the support of the (internal) leadframe.

How would one distinguish between the two?

alpeace89: How would one distinguish between the two?

By reading the datasheet.

// Per.