UM5055 Datasheet, PDF (1/5 Pages) Union Semiconductor, Inc. – Single Line ESD Protection Diode Array

UM5055
Single Line ESD Protection Diode Array
UM5055 SOD523
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.
It gives designer the flexibility to protect one unidirectional line in applications where arrays are
not practical. Additionally, it may be “sprinkled” around the board in applications where board
space is at a premium. It may be used to meet the ESD immunity requirements of IEC 61000-4-2,
Level 4 (±15kV air, ±8kV contact discharge).
Applications
Features
z Cell Phone Handsets and Accessories z Transient protection for data & power lines to
z Microprocessor based equipment
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV
Personal Digital Assistants(PDA’s)
z Notebooks, Desktops, and Servers
z Portable Instrumentation
(contact)
z Small package for use in portable electronics
z Suitable replacement for MLV’s in ESD
z Cordless Phones
z Digital Cameras
z Peripherals
z MP3 Players
protection applications
z Protect one I/O or power line
z Low clamping voltage
z Stand off voltage: 5V
z Low leakage current
z Solid-state silicon-avalanche technology
Pin Configurations
Top View
ZF
UM5055
SOD523
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http://www.union-ic.com Rev.03 Jul. 2013
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