The D01-9972042 is a 20-contact, female, single-row modular IC socket from the D01 series. It features a Gold and Tin finish and is designed with a 2.54mm pitch. The socket utilizes a four-finger Beryllium Copper contact technology, enabling it to accept mating pins with diameters ranging from 0.40mm to 0.56mm. As a modular connector, it can be cut to smaller sizes, providing flexibility for custom PCB layouts and prototyping applications.