Electrostatic Discharge (ESD)
Protection Design Guide
ESD
Electrostatic Discharge
(ESD) Protection
Design Guide
ABOUT THIS GUIDE
Choosing the most appropriate suppressor technology requires a balance between equipment
protection needs and operating requirements, taking into account the anticipated threat level. In
addition to the electrical characteristics of suppression devices, the form factor/package style
must also be considered. This guide is designed to summarize some of the comprehensive ESD
solutions that Littelfuse offers, and help designers narrow to technologies appropriate to their
end application:
Table of Contents
Page
Introduction
2
General Purpose ESD Protection
3-4
Ethernet and Lightning Surge Protection
5
Low Capacitance ESD Protection
6-7
Application Specific Device Selection
• USB1.1
• USB2.0
• USB3.0 (Two Device Solution)
• USB3.0 (Integrated Solution)
• USB3.1 (Type C Compliance)
• HDMl
• HDMI (Includes protection for Ethernet and 5V power)
• Display Port
• DVI (Digital Video Interface)
• Ethernet, Intra-building Lightning Immunity (GR-1089) Non-PoE
• Ethernet, Inter-building Lightning Immunity (GR-1089)
• Ethernet, Tertiary Only Lightning Immunity (General)
• Ethernet (ESD only)
• 2.5 and 5.0 Gigabit Ethernet
• xDSL, Intra-building Lightning Immunity (GR-1089) and ESD
• T1/E1/J1 Carrier
• eSATA
• 1394a/b
• LVDS (Low Voltage Differential Signaling)
• Audio (Speaker/Microphone)
• Analog Video
• Keypad/Push Buttons
• SIM Socket
• RS-485
• RS-232
• CAN Bus
• LIN Bus
• Touchscreen
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Legal Disclaimers
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© 2016 Littelfuse, Inc.
Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to changes without notice. Visit littelfuse.com for more information.
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APPLICATION SPECIFIC DEVICE SELECTION
USB3.1 (Type C Compliance)
Considerations:
SuperSpeed+ lines operate up to 10 Gbps, so lowest unidirectional capacitance is required.
Configuration control is logic line, helps determine polarity of the connection, and voltage transfer level.
SBUx is used to support DisplayPort communication across the SuperSpeed+ lines
USB 2.0 is a bidirectional interface under Type C protocol, different than historical USB 2.0
Application Schematic:
B Row
A Row
*Packages shown as transparent
SSTXp1
SSRXp1
SuperSpeed + Lines Unidirectional
SuperSpeed + Lines Unidirectional
SSRXn1
SuperSpeed + Lines Unidirectional
SuperSpeed + Lines Unidirectional
SSTXn1
SPHVxx
Vsus
Power 5V-20V, 2-5 AMP
CC1
Config Control PoweredUSB
Sideband 2 DisplayPort Enable
Dp1
No Pin
Dn1
USB2.0 , But Bidirectional
SP3022
USB2.0 , But Bidirectional
No Pin
SBU1
Sideband 1 DisplayPort Enable
SP1003 or SP1006
CC2
Config Control PoweredUSB
Vsus
SSRXn1
Power 5V-20V, 2-5 AMP
SPHVxx
Vsus
SSTXn2
SuperSpeed+ Lines Unidirectional
SuperSpeed+ Lines Unidirectional
SSTXp2
SuperSpeed + Lines Unidirectional
SuperSpeed + Lines Unidirectional
SSRXp1
Recommended TVS Diode Arrays:
Ordering
Number
ESD Level
(Contact)
1/0 Capacitance @ VR=OV
#of
Channels
VRWM
Packaging
RF3077-000
±12kV
0.2pF
4
6V
µDFN-10 (2.5x1.Omm)
SP1003-01 ETG
±30kV
30pF
1
5V
SOD882 (0402)
SP1006-01 UTG
±30kV
25pF
1
6V
0201 DFN
SPHVxx-01 ETG
±15 to 30kV
25 to 60pF
1
12-36V
SOD882 (0402)
SP3022-01 ETG
±22kV
0.35pF
1
5.3V
SOD882 (0402)
SP3022-01WTG
±22kV
0.35pF
1
5.3V
Flipchip 0201
©2016 Littelfuse, Inc
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ESD Protection Design Guide
Legal Disclaimers
Liability
Disclaimer
Littelfuse, Inc. its affiliates, agents, and employees,
and all persons acting on its or their behalf (collectively,
“Littelfuse”), disclaim any and all liability for any errors,
inaccuracies or incompleteness contained here or in any
other disclosure relating to any product. Littelfuse disclaims
any and all liability arising out of the use or application
of any product described herein or of any information
provided herein to the maximum extent permitted by law.
The product specifications do not expand or otherwise
modify Littelfuse terms and conditions of purchase,
including but not limited to the warranty expressed therein,
which apply to these products.
Specifications, descriptions and data contained in this
document are believed to be accurate. However, users
should independently evaluate each product for the
particular application. Littelfuse reserves the right to
change any information contained herein without notice
and may, at its sole discretion, change the design,
manufacture or construction of any product. Visit
www.littelfuse.com for the most up-to-date information.
Littelfuse’s only obligations for any of its products are
specified in its Standard Terms and Conditions and
Littelfuse shall not be liable for any indirect, consequential
or incidental damages from any sale or use of any of its
products.
Right to Make Changes
Littelfuse reserves the right to make any and all changes to
the products described herein without notice.
Not Intended for Use in Life Support or Life Saving
Applications
The products shown herein are not designed for use
in life sustaining or life saving applications unless
otherwise expressly indicated. Customers using or selling
Littelfuse products not expressly indicated for use in such
applications do so entirely at their own risk and agree
to fully indemnify Littelfuse for any damages arising or
resulting from such use or sale. Please contact authorized
Littelfuse personnel to obtain terms and conditions
regarding products designed for such applications.
Intellectual Property
No license, express or implied, by estoppel or otherwise,
to any intellectual property rights is granted by this
document or by any conduct of Littelfuse. Product
names and markings noted herein may be registered
trademarks of their respective owners. Littelfuse makes
no representations or warranties of non-infringement or
misappropriation of any third party intellectual property
rights unless specifically provided for herein.
© 2016 Littelfuse • ESD Protection Design Guide
36
www.littelfuse.com
littelfuse.com
circuitprotection@littelfuse.com
EC129Nv0616