All IC Sockets comes under this category.
18 Pin IC Base Socket
IC Bases or Sockets are commonly used while soldering ICs to PCB. These are generally meant for avoiding the damages of IC during soldering and for easy replacement of ICs. Overheating of ICs may damage it which are generally costly components in a PCB. The usage of IC Base / Socket is inexpensive when compared to the time / effort required to replace an IC. Replacing an IC without IC base may also damage the prototype board. These IC sockets / bases are commonly made using thermoplastics and tin-plated alloy contacts. One end of these sockets are normally notched for identifying the direction of IC placement.