Author: Steve Stach Company: Process Sciences Inc. Date Published: 8/23/1998
Surface Mount International
Abstract: Conventional ball grid array (BGA) rework techniques address removing and replacing a defective BGA with a new device, leaving the removed device in a scrap pile. This is often unnecessary and expensive as the most common reasons for BGA failures are solder shorts and opens. This paper will address the rework and repair techniques, which are available to re-ball or otherwise repair the original BGA. This would be of great importance if the original BGA was either expensive ($50 or greater) or if the device was unavailable (application specific IC’s).