The eSOP-12 package (K package) is a new 12 pin package introduced by Power Integrations. The package offers excellent thermal performance as it facilitates heat transfer the PCB through source pins as well as through the tab of the device. This slender new surface-mount (K) package is suited for applications without heatsinks up to 65 W in compact, open-frame installations such as slim LCD TV auxiliary power, set-top boxes, PC standby, and DVD players. In notebook, netbook, and printer adapters, the thermally efficient eSOP package can supply up to 40 W using only the PCB for thermal management.