Ensure that a device is properly grounded before you test or use it. Do not take optical modules out of ESD packages or stack them at random without any ESD prevention measures. Take full ESD measures when installing it. In Part Two, Principles of ESD Control – ESD Control Program Development, we introduced six principles of static control and six key elements of ESD program development and implementation. In Part Three, we will cover basic static control procedures and materials that will become part of your ESD. protective materials and personnel to the same electrical potential. ESD. This creates the perfect environment for electro-static discharge (ESD) hazards, or the discharge of static electricity from a body surface to a device. In the case of consumer electronics, for example, ESD can occur between a user's finger and a tablet's USB or HDMI connector and cause. This guide describes the general handling measures and precautions when handling optical transceivers to ensure they can be handled with reduced risk for damage. So, it is necessary for everyone, who handles electrostatic sensitive devices (ESDS), to know the reasons of such failures. The paper will give an overview about possible causes for ESD.