This document provides guidelines for the use of Chip-on-Board Technology (hereafter this term may be referenced by the acronym COB). These guidelines include: Design guidelines@ Manufacturing information@ Assembly guiddines@ Testing guidelines@ and Bibliographic references. Purpose COB is the logical extension of hybrid circuit technology@ but with addiuonal advantages to be discussed later. This document is intended to be an aid to the provider or user of COB technology by providing guidelines for its successful implementation as a continuation of the evolution of electronic assembly from through-hole mount to surface mount and on to the finer pitch of COB.