Technical Library

Reliability Enhancement of Wafer Level Packages with Nano-Column-Like Hollow Solder Ball Structures

by: Ronak Varia, Xuejun Fan; Lamar University - Department of Mechanical Engineering

In this paper, hollowed solder ball structures in wafer level packages are investigated. Detailed 3-D finite element modelling is conducted for stress and accumulated inelastic strain energy density or creep strain analysis. Three cases are studied in this paper: a regular solder ball, a solder ball with a polymer core of sphere shape, and a hollowed solder ball... read article »

SMT / PCB Products

Custom Nozzles
Custom Nozzles

Available for all types of SMT pick-and-place equipment and tooling...

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The Mark III - Reflow System
The Mark III Reflow System

Lead free certified, maintenance free system with lowest nitrogen...

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ProntoVIEW-MARKUP - Assembly Viewer Software
ProntoVIEW-MARKUP Assembly viewer software

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SMT / PCB Equipment Auctions

X-Line Electronic Equipment Auctions

Complete Closure of Late Model SMT and Test Facility

Mon, January 23-24 | Online Auction

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PCB Repair Kit

PCB Repair Kit

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CR Tech RTI 6500
CR Tech RTI 6500 AOI

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Camalot 5000 Adhesive Dispenser


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Electrovert OMNI - 10
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Electrovert OMNI - 10 Reflow Oven


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Electronics Forum

Solder pot inspection - Our annual solder drain and inspection lead us to discover holes in the ceramic paint covering...

Rigid-Flex board via problems - I am wondering first what kind of profile do you use and what are you peak temps...

Is a bare PCB ESD-sensitive ? - Can a bare PCB be ESD-sensitive? If yes, in what conditions? ...

Events Calendar


Conference, Trade Show/Exhibition | February 28 - March 1 | San Diego, CA, USA | Sponsored by: IPC

The premier electronics industry conference and exhibition...


Conference, Trade Show/Exhibition | January 18 | Tokyo, Japan | Sponsored by: Reed Exhibitions

Japan's largest exhibition specialised in Test, Inspection, Measurement and Analysis for Electronics Manufacturing...

Automation Technology Expo West - ATX West 2012

Conference, Trade Show/Exhibition | Anaheim, CA, USA | February 14-16 | Sponsored by: UBM Canon

The world's leading automation suppliers showcase their products and technologies for lean manufacturing...

Career Center


Senior Process Engineer

Pullman, WA, USA | Schweitzer Engineering Laboratories

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Zeeland, MI, USA | Gentex Corporation


Austin, TX, USA | ATR International


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Costa Mesa, CA, USA

SMT Technician

Imus Cavite, PH, Philippines

SMT Maint Tech/Process Engineering

Fredericksburg, VA, USA

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: Exhibition, Conference: Dallas Expo & Tech Forum - February 7


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: Webinar: New Developments in ENIG and ENEPIG for Today�s Electronic Products - January 19

SMTnet Express
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Capital Equipment Exchange - Used PCB Assembly Equipment

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