Electrostatic Discharge (ESD) is an electrical transient that poses a serious threat to electronic circuits. The most common cause is friction between two dissimilar materials, causing a buildup of electric charges on their surfaces. Typically, one of the surfaces is the human body, and it is not uncommon for this static charge to reach a potential as high as 15,000 volts. At 6,000 static volts, an ESD event will be painful to a person. Lower voltage discharges may go unnoticed, but can still cause catastrophic damage to electronic components and circuit.

PULSE-GUARD® ESD Suppressors

Littelfuse PulseGuard® ESD Suppressors offer extremely low capacitance which makes them ideal for use in high-speed data circuits (IEEE 1394, USB 2.0, HDMI, DVI, etc.). Available in single-line and multi-line packages, they provide ESD protection while ensuring that signal integrity is maintained.

When to Choose PULSE-GUARD® ESD Suppressors versus other ESD protection technologies:

  • The application tolerates very little added capacitance (high speed data lines or RF circuits)
  • ESD is the only transient threat
  • Protection is required on data, signal, and control lines (not power supply lines)

Additional information about ESD and suppression technologies.

PulseGuard ESD PGB2 Datasheet

PULSE-GUARD® ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD).

pdf icon Why does USB 2.0 need Circuit Protection Application Note

This application brief demonstrates how to ensure reliable and safe circuit operation of USB products, protection against voltage and current transients must be carefully considered. Due to the higher data rates of USB 2.0, attention to the electrical characteristics of protection solutions is required.

Littelfuse USB 3 ESD Protectionicon USB 3 0 Circuit ESD Protection Application Note

The Universal Serial Bus (USB) was released in 1996 to standardize connections between computer peripherals; more than 3.5 billion USB devices are expected to ship in 2012...

EC606 Protecting the Universal Serial Bus from Over Voltage and Overcurrent Threats

This application note addresses the various requirements for protecting the Universal Serial Bus (USB) from overcurrent and over voltage environmental threats.The solutions presented cover both USB 1.1 and the higher speed USB 2.0 circuitry.