i need an mq2 gas sensor with 6 pins. a pair of H, A,B pins rrespectively
Insufficient information to do anything with. You need to fill in the template in this group (which you appear to have deleted!) with a web site that gives the physical dimensions and connection information for the part that you want. A google search of the form “fritzing part MQ2” will turn up any parts that are available now.
Peter