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UM5075/5079

Single Line ESD Protection Diode Array

UM5075 SOD523

UM5079 DFN2/FBP2 1.0×0.6

General Description

The UM5075/5079 ESD protection diode is designed to replace multilayer varistors (MLVs) in

portable applications such as cell phones, notebook computers, and PDA’s. 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 UM5075/5079 ESD protection diode protects sensitive semiconductor components from

damage or upset due to electrostatic discharge (ESD) and other voltage induced transient events.

The UM5075 is available in SOD523 package and the UM5079 is available in DFN2/FBP2

1.0×0.6mm

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



Cell Phone Handsets and Accessories



Personal Digital Assistants (PDA’s)



Notebooks, Desktops and Servers



Portable Instrumentation



Cordless Phones



Digital Cameras



Peripherals



MP3 Players



Transient Protection for Data 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: 7V



Low Leakage Current



Solid-State Silicon-Avalanche Technology

Pin Configurations

Top View

UM5075

SOD523

UM5079

DFN2/FBP2 1.0×0.6