Abstract: Provided is an LED support. The LED support includes a substrate, an inner electrode, a heat dissipation pad, an electrode pad, and a solder resist layer. The electrode pad includes a top connection layer and a bottom electrode layer that are laminated. The top connection layer is connected to the back of the substrate and is provided with a connection portion extending toward the heat dissipation pad and connected to the conductive through hole in the substrate. The connection portion is between the heat dissipation pad and the bottom electrode layer. The spacing between the bottom electrode layer and the heat dissipation pad is greater than the spacing between the connection portion and the heat dissipation pad. The solder resist layer is filled in a groove formed between the electrode pad and the heat dissipation pad on the back of the substrate, and covers the connection portion.

Abstract: A lead frame for an optocoupler is provided, which is a metal sheet and includes multiple frame units and multiple mutually parallel connecting strips. The frame units are arranged at intervals on each of the connecting strips. Each of the frame units includes two adjacent functional parts, and two pins perpendicularly connected to the connecting strip. The two functional parts are both located on one side of the connecting strip and are respectively connected to the two pins and ends of the two pins are located on the other side of the connecting strip. The area of each of the functional parts is sufficient to accommodate a chip to be installed and fixed, and the chip is any one of a light-emitting chip and a light-sensing chip.

Abstract: Disclosed is a pump device, comprising a rotor assembly, a stator assembly and a spacer. The pump device has a first inner cavity and a second inner cavity; the pump device has a first housing and a second housing, the first housing partially covers the rotor assembly, the second housing at least partially covers surrounds an outer periphery of the stator assembly; the first housing and the spacer are fixedly connected by means of welding, and the connection position between the first housing and the spacer is sealed; the second housing and the spacer are fixedly connected by means of welding, and the connection position between the second housing and the spacer is sealed; the spacer comprises a first flange portion and a cylinder portion.