Single wavelength reflection for leadframe brightness measurement

A method of manufacturing a packaged device, the method comprising:

• mounting a semiconductor chip on a leadframe responsive to a determination that a brightness ratio of a predetermined area on a surface of the leadframe is within a predetermined range;
• electrically connecting pads on the semiconductor chip with pads on the leadframe;
• applying a molding compound on the semiconductor chip and the leadframe and curing the molding compound;
• and
• singulating each of a plurality of the leadframes of a leadframe sheet to manufacture a plurality of packaged devices.

A method of manufacturing packaged devices, the method comprising:

• mounting semiconductor chips on leadframes responsive to a determination that a brightness ratio of an area on a surface of the leadframes is within a predetermined range;
• electrically connecting pads on the semiconductor chips with pads on the leadframes;
• applying a molding compound on the semiconductor chips and the leadframes and curing the molding compound;
• and
• singulating each of a plurality of the leadframes to manufacture a plurality of packaged devices.

A method of manufacturing packaged devices, the method comprising:

• mounting semiconductor chips on leadframes responsive to a determination that a brightness ratio of an area on a surface of the leadframes is within a predetermined range;
• electrically connecting pads on the semiconductor chips with pads on the leadframes;
• and
• applying a molding compound on the semiconductor chips and the leadframes and curing the molding compound

A method of manufacturing a packaged device, the method comprising:

• mounting a semiconductor chip on a leadframe responsive to a determination that a brightness ratio of an area on a surface of the leadframe is within a predetermined range;
• electrically connecting pads on the semiconductor chip with pads on the leadframe;
• and
• applying a molding compound on the semiconductor chip and the leadframe and curing the molding compound.