A terminal lead frame comprises a frame and a plurality of terminal pairs set in the frame. The frame is a first dielectric material. The terminal pairs include a first terminal and a second terminal. The first terminal and the second terminal include a first and second extensions extending into the frame along with a first path and a second path, respectively. The first path is longer than the second path, wherein the first extension contacts with a second material to form a first area of contact while the second extension has a second area of contact with respect to the second dielectric material. The first area of contact is larger than the second area of contact.