General Description
The UM5055 ESD protection diode is designed to replace multilayer varistors (MLVs) in portable applications such as cell phones, notebook computers, and PDA’s. It features large cross-sectional area junctions for conducting high transient currents, offers desirable electrical characteristics for board level protection, such as fast response time, lower operating voltage, lower clamping voltage and no device degradation when compared to MLVs. 

Features
● Transient protection for data & power lines to
   IEC 61000-4-2 (ESD) ±15kV (air), ±8kV
   (contact)
● Small package for use in portable electronics
● Suitable replacement for MLV’s in ESD
   protection applications
● Protect one I/O or power line
● Low clamping voltage
● Stand off voltage: 5V
● Low leakage current
● Solid-state silicon-avalanche technology 

Applications
● Cell Phone Handsets and Accessories
● Microprocessor based equipment
   Personal Digital Assistants(PDA’s)
● Notebooks, Desktops, and Servers
● Portable Instrumentation
● Cordless Phones
● Digital Cameras
● Peripherals
● MP3 Players