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Strength of Lead-free BGA Spheres in High Speed Loading

Featured ArticleCall for Papers

Strength of Lead-free BGA Spheres in High Speed Loading

Concern about the failure of lead-free BGA packages when portable devices such as cell phones are accidentally dropped and a general concern about the resistance of these packages under shock loading has prompted an interest in the impact strength of the soldered BGA connection.

This paper reports the results of the measurement of the impact strength of lead-free 0.5�0.01mm diameter BGA spheres on 0.42mm solder mask defined pads on copper/OSP and ENIG substrates using recently developed equipment that can load individual BGA spheres at high strain rates in shear and tension.

Credit/Source: Keith Sweatman, Shoichi Suenaga, Tetsuro Nishimura,  Nihon Superior Co., Ltd.

Read article...

Featured New Products

MY-Series Extended

Placement Machine

All-in-one machine. Enhanced solutions using latest technology that extend flexibility and increases throughput... »»

manufacturer: Mydata


Stencil Printer

Semiautomatic, equipped with a flexible mounting table for quick setup & changeover of single and double-sided PCBs...  »»

manufacturer: Manncorp


Assembly viewer software

Used across the entire production floor. Can create process and assembly aid documents... »»

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manufacturer: Unisoft

More New Products:

Mirtec: MV-2HT Series...

Heller: The Mark III Reflow System...

DEK: Galaxy Screen Printer...


Featured video

Lead Free SOT23 Installation
(3 min. 11 sec.)


Best, Inc instructors have put to video demonstrations of common hand soldering skills. These are not designed to be in place of live one on one training where repetitive skills and subsequent one on one feedback is given. Rather they are quick refreshers designed to be viewed if a specific skill has not been practiced in a while.

Watch Video...

Equipment mart

Fuji CP742E
Placement System


Agilent 3073 SIII
Automatic Test

Lewis & Clark

Universal GSM 1
Pick and Place


Paste Inspection


More Equipment Listings:

Component Counters, Counting Scales, Lead Forming Machines, Pallets and Workboard Holders...

Electrovert Atmos Reflow Oven (10 Zone)...

Universal Instruments 6796 Dip Inserter...

Visit Used Equipment Mart...


New Feature: you can now upload pictures with your postings. »»

Fuji feeder E-clips

Posted by Sr.Tech

Does anyone know of an after market source for the E-clips that hold the tape covers on CP and IP feeders... »»

Expired solder paste

Posted by AlexS

What would be some of the effects regarding assembly quality. Is there any changes in flux composition toward the end of shelf life?... »»

Used automatic stencil print recommendations

Posted by Comatose

We are a small OEM that runs a high mix/low volume environment. Typical runs are a couple or five hundred boards, one or two products per day... »»

More Forum Topics:

What happens to LPI Solder Mask on the RF4 PCB During Reflow?...

Auto Insertion multi purpose workboard holder...

GSM Nozzle Modification...

Visit the Forum...


Boards: Get the Bare Facts on Bare Boards (inspection and fabrication)

Free Online Seminar/Course | EPTAC Corp.

Wed, April 16, 2008 | Online

You are probably aware of IPC-A-610 "Acceptability of Electronic Assemblies"(...) We take a look at IPC-A-600, IPC-6012 and other standards that can be crucial... »»

Signal Integrity & EMI Control in High Speed Circuits

Seminar/Course | Premier EDA Solutions Ltd.

Tue, April 15, 2008 | The Stone House Hotel, Stone, UK

The increase in switching speeds of modern digital electronics causes significant challenges for the PCB designer. In such cases, the physical interconnections... »»

12th Annual Atlanta SMTA Expo

Trade Show/Exhibition, Conference | SMTA

Thu, April 17, 2008 | Gwinnett Civic Center, Atlanta, GA, USA

This outstanding event will feature networking opportunities with leading suppliers to our industry, free technical sessions, raffle drawings and a complimentary lunch... »»

More Events:

Extended PLC Troubleshooting Seminar...

SMT Processes Certification...

Lead-Free Academy...

Visit the Event Calendar...

Career Center

Manufacturing Engineer

Schweitzer Engineering Laboratories

Pullman, WA, USA

We seek a a senior level Manufacturing Engineer to work in a team-oriented environment, leading new product introductions into manufacturing... »»

SMT Manufacturing Manager

Ma labs

San Jose, CA, USA

Responsible for quality assurance, productivity, cost control, workplace safety, employee development and maintenance of the facilities... »»

High Temp Soldering Assembler


Sugar land, TX, USA

Looking for experienced solderers and assemblers. High Temp experience a must. Must have understanding of IPC standards...»»

More Jobs:


AOI Operator...

Manufacturing Engineer...

Visit Career Center...

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 for SMT Processes and Six Sigma Green Belt


Next Event: Indiana SMTA Joint Vendor Day w/ iMaps


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: Conference: Overcoming the Reliability Challenge: An IPC Summit

SMTnet Express
April 10, 2008

Subscribers: 28270

SMTnet Members:

Companies: 6924

Users: 23619

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