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SMTnet Express, May 12, 2016, Subscribers: 24,536, Companies: 14,773, Users: 40,243

Technical Library

Influence of Plating Quality on Reliability of Microvias

Yan Ning, Michael H. Azarian, Michael Pecht; CALCE Center for Advanced Life Cycle Engineering

Advances in miniaturized electronic devices have led to the evolution of microvias in high density interconnect (HDI) circuit boards from single-level to stacked structures that intersect multiple HDI layers. Stacked microvias are usually filled with electroplated copper. Challenges for fabricating reliable microvias include creating strong interface between the base of the microvia and the target pad, and generating no voids in the electrodeposited copper structures. Interface delamination is the most common microvia failure due to inferior quality of electroless copper, while microvia fatigue life can be reduced by over 90% as a result of large voids, according to the authors' finite element analysis and fatigue life prediction. This paper addresses the influence of voids on reliability of microvias, as well as the interface delamination issue.

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Forum search results for related keywords: plating, microvias, voiding.

SMT / PCB Products

Hand Assembly

Virtual Industries






GPD Global

Solder Paste Stencils

BEST, Inc.



Material Handling...

Count On Tools




BTU International

Material Handling/Storage






SMT / PCB Equipment Auctions

SMT Equipment & Facility Support

Juki, Heller, Ekra, Pre-Heaters, Support, Facility Equipment, etc...

June 7 | Tiger Group

PCB Contractor Surplus SMT Equipment

Hi-Speed Pick and Place Lines w/Universal HSP Chip Shooters, 100s of Feeders, Racks, etc...

May 13-18 | Quaker City Auctioneers

Electronic Equipment Mart

Electrovert Electrovert Electra
500F Lead Free

Wave Solder Equipment

ECM Equipment Sales

Koh Young KY-3030
Aspire 3D SPI

Inspection Equipment

AdoptSMT Europe GmbH

Speedline Electrovert
Onmi ES 10

Reflow Ovens

X-Line Asset Management

PPM 5000 Large Board

Adhesive Dispensing Equipment

PPM, Inc.

Speedline MPM Excel

Screen Printing Equipment

Capital Equipment Exchange

Fuji XP-143E Chipshooter

Pick and Place Equipment/Feeders

IBE SMT Equipment

Events Calendar

DI-water vs Chemistry - Free PCB Cleaning Webinar

Online Webinar | May 19 | ZESTRON Corporation

Symposium on Counterfeit Parts and Materials

Trade Show/Exhibition, Conference | June 28 - 29 | Surface Mount Technology Association (SMTA)

4th Annual Conflict Minerals Compliance and Supply Chain Transparency Conference

Conference | June 21 - 23 | marcus evans north america

Career Center

Service and Applications engineer/technician

Chino, CA, USA

SCIENSCOPE International

Sales Coordinator

Albany, NY, USA

YINCAE Advanced Materials, LLC.

Regional Sales Manager - EB

Wixom, MI

Acromag, Inc.

Industry Associations Events


SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

Membership Info | SMTA Certification | Bookstore

Next Event: SMTA Webtorial: It is Time for Low Temperature - Low Temperature Solders, New Development, and Their Applications - May 17-19


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: IPC Reliability Forum - May 17 - 19

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

Used PCB Assembly Equipment - CE Exchange

PCB real-time X-ray inspection - JewelBox Ultra Compact Microfocus X-ray Technology

Unused Equipment? - let BajaBid turn your EXCESS ASSETS into cash!

KIC - Making Ovens Smarter.

CyberOptics - Revolutionary AOI Technology, Unbelievable Speed

FINETECH - The complete solutions for all types of ADVANCED REWORK applications.

Late Model SMT equipment ONLINE AUCTIONS

Quality Pre-Owned SMT Eequipment - Robo-Tek

Kyzen Free Cleaning Audit

Hioki 1240 Flying Probe Tester - ultra-high speed measuring, fine pitch inspection.

High-Speed 3D AOI - Highly Customizable Viscom S3088 serie. - Rework Tools

ii-Feed intelligent pick and place feeder

DS Series large board dispensers - GPD Global

HELLER - Choose an Oven for Your Reflow Needs

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