The present invention provides a solder ball grid array (SBGA) type connector and method of manufacture thereof. The SBGA connector includes a number of contacts which each have a solder ball formed at one end thereof. According to the present invention the solder ball is formed by disposing and retaining...http://www.google.es/patents/US20020061687?utm_source=gb-gplus-sharePatente US20020061687 - Solder bearing grid array
