UM50125 Datasheet, PDF (1/7 Pages) Union Semiconductor, Inc. – Single Line ESD Protection Diode Array

UM50125/50129
Single Line ESD Protection Diode Array
UM50125 SOD523 1.2×0.8
UM50129 DFN2/FBP2 1.0×0.6
General Description
The UM50125/50129 ESD protection diode is designed to replace multilayer varistors (MLVs) in
portable instrumentation, notebook computers, digital power meter, digital camera and
communication systems. They feature large cross-sectional area junctions for conducting high
transient currents, offer 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 UM50125/50129 ESD protection diode protects sensitive semiconductor
components from damage or upset due to electrostatic discharge (ESD) and other voltage induced
transient events. The UM50125 is available in SOD523 package and the UM50129 is available in
DFN2/FBP2 1.0×0.6 (compatible with SOD923 & SOD882) package, both with working
voltages of 12 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, ±30kV air, ±30kV contact discharge.
Applications
z Cell Phone Handsets and Accessories
z Notebooks, Desktops and Servers
z Portable Instrumentation and
Accessories
z Digital Power Meter
z Digital Cameras
z Communication Systems
Features
z Transient protection for data lines to
IEC 61000-4-2 (ESD):
±30kV (air), ±30kV (contact)
z Small package for use in portable electronics
z Suitable replacement for MLV’s in ESD
protection applications
z Protect one I/O or power line
z Low clamping voltage
z Stand off voltage:12V
z Low leakage current
z Solid-state silicon-avalanche technology
Pin Configurations
Top View
UM50125
SOD523 1.2×0.8
UM50129
DFN2/FBP2 1.0×0.6
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http://www.union-ic.com Rev.01 Mar. 2012
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