| abstract |
This disclosure relates to laser bonding electrical components having conductive elements which are naturally reflective of the laser beam wavelength. Component leads or pads which are made of copper or have a gold coating, for example, will reflect the wavelength of an Nd:YAG laser, making it difficult to form physical and electrical bonds using the laser bonding technique. In preferred embodiments, the conductive elements are coated with a non-flux, non-metallic, coating material which is less reflective of the laser energy than the conductive elements, making it possible to efficiently use a laser to accomplish bonding. |