How to Evaluate anESDControl Program

Abstract

There are two overall types of electrostatic discharge (ESD) risk that are normally controlled in an electrostatic discharge protected area: direct ESD to or from the device; and electrostatic fields that could lead to ESD to or from the device. The process of evaluating ESD risks must start with an evaluation of the ESD susceptibility of the ESD‐sensitive (ESDS) component or assembly. This chapter discusses the evaluation of process capability of ESD control program based on human body model, machine model, and charged device model. Standard ESD control precautions applying ESD control equipment address most well‐known ESD risks, but they do not necessarily address all ESD risks. Every step of processes where ESDS devices are handled should be scrutinized for possible ESD risks. The chapter provides a discussion on the evaluation of cost effectiveness and compliance of the ESD control program.