ESD Protection Design Guide - Littelfuse

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

8 8 9 10 11 12 13 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Legal Disclaimers

36 © 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 [email protected]

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