Union Semiconductor UM5304EEBF

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. The UM5055 ESD protection diode protects sensitive semiconductor components from damage or upset due to electrostatic discharge (ESD) and other voltage induced transient events. The UM5055 is available in SOD523 package and with working voltages of 5 volt.

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