There are many type of ESD sensitive parts. Some of the most ESD sensitive parts used in the Electronic Industry are:

Radio Frequency components
Disk Drive head (Magneto resistive heads (MR), Giant Magneto resistive heads (GMR))
Complementary Metal Oxide Silicon (CMOS) Integrated Circuits (ICs)
Gallium Arsenide Field Effect transistors (GaAsFETs)
Reticles
Random Access Memory (RAM) [...]

ESD stands for Electrostatic Discharge.When two materials come into contact and then separate, static charges are developed. Electrons are transferred from one material to another material in a process called Triboelectric charging. Electrons leave their orbits around the nucleus to neighbouring orbits of another material that has a greater tendency to accept the electrons. A [...]