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Lead-free and Tin-lead Assembly and Reliability of Fine-pitch Wafer-Level CSPs

Featured Article

Lead-free and Tin-lead Assembly and Reliability of Fine-pitch Wafer-Level CSPs

Universal Instruments Corporation

The option of treating fine pitch wafer level CSP (WLCSP) devices as flip chips and assembling them using a flux dipping process appears to be an increasingly attractive alternative to traditional paste printing assembly. However, printing solder paste offers the advantages of increasing standoff and improving thermal cycle performance. This paper discusses solder paste printing and flux dipping assembly processes for 0.4 and 0.5mm pitch lead-free WLCSPs and the corresponding assembly results and thermal cyclic reliability obtained...

Read more...

Featured Auction

Printed Circuit Board Equipment Exchange #7

DoveBid

Sale Type: Online Auction

Sale Open: 27 June 2007, 12:01 A.M. PDT

Sale Close: 28 June 2007, 5:00 P.M. PDT

Location of Assets: USA

register

Assets for Sale:

Bid on State-of-the-Art PCB Manufacturing Equipment

Featuring Drilling & Routing, Lamination, Etching, Plating, Expore, Solder Mask, Final Test,plus SMT & Placement, Feeders, Reflow & Convection, Screen Printing and much more

Read more...

Featured 
Software

ProntoVIEW-MARKUP

UNISOFT

Rich Larue

Download 
Free Trial

Assembly viewer software used by electronics manufacturers to quickly find components, pin, shorts between traces, etc. ProntoVIEW-MARKUP is also a redline tool that allows annotation of the assembly to create work and assembly instructions, first article inspection, etc.

Read more...

 
Best Video Soldering Tips

Lead-Free (SAC Alloy) PLCC Placement (1 of 2)

BEST, INC

Bob Wettermann

BEST 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

Forum

Rosin vs. Resin Flux

Posted by GSx

Are there significant diffrences in terms of soldering (wire for manual solder) performance by using RO vs RE fluxes? Which are the main differences between the two fluxes?...»»

PCB washing

Posted by jmabie

We use a washer soluable solder flux for our solder wave. We then wash the boards in a dishwasher. We have done it this way for years without problems. We just got a new dishwasher and now we get residue on the solder (white marks)... »»

HELLER 1800W Elements

Posted by Mark M.

I have some issues arising with having to change some bottom heater elements and blowers. Can someone tell me how diffucult it will be to accomplish this with no trianing back ground on this. I have opened the books and made sense of most of it... »»

Visit the Forum...

Forum

Random Vibration, Shock Testing, HALT, ESS, HASS

Seminar/Course | A.T.E. Solutions, Inc.

Tue, June 12, 2007 | Local Hotel, NJ, USA

Upon completion of this short course, you will be able to measure vibration and shock, calibrate vibration and shock measurement systems, convert measured data into a test program, interpret vibration and shock test requirements... »»

Comprehensive Lead Free Workshop featuring Dr. Jennie Hwang

Seminar/Course | Blackfox Training Institute

Tue, June 5, 2007 | Denver, CO, USA

The only complete Lead-Free Coverage! �Get the Facts� from world renowned Lead Free expert Dr. Jennie Hwang. Attend a comprehensive workshop that is designed to address every aspect of RoHS & WEEE directives... »»

SMTA Upper Midwest Vendor Show and Technical Program

Trade Show/Exhibition | SMTA

Wed, June 6, 2007 | 3M Company, St. Paul, MN, USA

The ever-popular SMTA Upper Midwest Vendor Show and Technical Program is back again at 3M Headquarters in St. Paul, MN. This program will be held in conjunction with free technical programming and attendee registration is free... »»

Visit the Event Calendar...

Association

Information

SMTA

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. The association is dedicated to the advancement of the electronics industry through member education and interaction. Membership Info

Upcoming Event for SMTA

Annual Upper Midwest Vendor Show

Wed, June 6, 2007 | 3M Company, St. Paul, MN

Join us for the Annual Upper Midwest SMTA Vendor Show! This event will be held in conjunction with free technical sessions. Plan now to join us for free technical sessions, free lunch and the chance to network with leading suppliers to our industry!...»»

IPC

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

Upcoming Event for IPC

Jisso International Forum

Wed, June 6, 2007 | Institute of Manufacturing Technology, Singapore

Have you ever thought about international cooperation on electronics packaging technology (JISSO) between Europe, USA, and Japan? It probably seems that technologies and standards have been created independently in each geographical location. Actually, that is not true, as there is a JISSSO communications network around the globe. The Jisso International Council meets annually and is made up of key persons from electronic industry - IEC, IPC, iNEMI, JEDEC, JEITA, JPCA, JEC, and R&D institutes. After eight years of closed meetings, the JISSO International Council is holding its first international forum and discussing its activities quite publicly....»»

Career Center

Jobs:

Sales: Account Executive

Silicon Forest Electronics

Vancouver, WA, USA

Engage in prospecting activities designed to establish relationships with targeted companies...»»

Sales Engineer

Restronics Southern California

Santa Clara, CA, USA

Outside Sales Engineer needed for leading Mfg. Representative selling Electronics Production Equipment and Supplies...»»

Electronic Assembler

Superior

Tempe, AZ, USA

Insert components into a printed circuit board in preparation for soldering. Inspect own work and team members...»»

Resumes:

Electronic/Mechanical Technician

Desired Field: Maintenance...

Winchester, VA, USA

20 years working on thru hole and Smt equipment. Phoenix II Operator Certification...»»

Electronics Engineer

Desired Field: Engineering

Tijuana, Mexico

7 years of experience in Manufacturing procesess and New Products Introduction of comercial and military SMT and PTH boards...»»

SMT Engineer

Desired Field: Engineering, Production

Mentor, OH, USA

6 years of experience in electronics. I know how to program, operate, maintain, setup SMT machines...»»


Visit Career Center...

SMTnet Express
May 31, 2007

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