The K-Series socket is designed to apply flat even pressure on the DUT with a secondary lever once the lid has been closed. This is to ensure that the platen does not skid across the top of the device when closing the lid potentially marking the device. This is especially important for exposed die products, or automotive applications where appearance is part of the pass/fail acceptance criteria post test. The vertical lever actuation does not increase the overall socket footprint, allowing for the highest density of populated sites on the burn-in board and in some cases reduces the overall footprint compared to other clamshell lid sockets. Another added benefit of the K-Series lid is airflow through the socket due to the taller profile, allowing for larger air channels to help maintain accurate temperatures.
