What is MLF package ? MLF means MicroLeadFrame (MLF) A MicroLeadFrame (MLF) is a type of chip scale microchip package. Amkor Technology introduced the MicroLeadFrame package in late 1999. This type of package provides contacts around the periphery of all four edges. The leads (or lands) are flush with the package body, and the leadframe's metal die-attach paddle is exposed on the bottom of the package, enabling the use of down-bonds or conductive die-attach material, which in turn allows for a stable, low-impedance ground, as well as heat transfer to a substrate such as a PCB.
A more recent design variation which allows for higher density connections is the Dual Row MicroLeadFrame (DRMLF) package. MLF package image