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Drop Shock Reliability of Lead-Free Alloys � Effect of Micro-Additives

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Drop Shock Reliability of Lead-Free Alloys � Effect of Micro-Additives

The drop shock reliability of solder joints has become a major issue for the electronic industry partly because of the ever increasing popularity of portable electronics and partly due the transition to lead free solders. Most of the commonly recommended lead-free are high Sn alloys which have relatively higher strength and modulus. This plays a critical role in the reliability of Pb-free solder joints. Further, even though metallugically it is the Sn in the solder alloys that principally participates in the solder joint formation, details of the IMC layers formed with SnPb and Pb-free alloys are different. The markedly different process conditions for SnPb and Pb-free alloys also bear on solder joint quality.

Credit / Source: Ranjit S Pandher, Brian G Lewis, Raghasudha Vangaveti, Bawa Singh / Cookson Electronics

Read Article...

Cree� XLamp� LED Thermal Management

XLamp LEDs lead the solid-state lighting industry in brightness while providing a reflow-solderable design that is optimized for ease of use and thermal management. Lighting applications featuring XLamp LEDs maximize light output and increase design flexibility, while minimizing environmental impact.

Credit / Source: Cree, Inc.

Read Article...

Featured New Products

The Mark III Reflow System

Pb Free Reflow Oven

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120 Mini Wave

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Compact bench-top unit used for controlled wave soldering or desoldering. Includes nozzles for ICs and other through-hole parts.  »»


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CELLS

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More New Products:

Mirtec: MV-7 Series In-Line AOI Machine...

VeriClean: Flux Remover, Degreaser

VJ Electronix: Summit 750 Rework System...

Featured auction

Equipment Formerly used by Major Mobile Phone Manufacturer

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Beginning Date: Fri, June 05, 2009

Ending Date: Wed, June 24, 2009

Location of Assets: Hungary

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Siemens Siplace HS50 & F5HM Placement Machines, Asymtek Glue Dispensers and DEK Screen Printers

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Equipment mart

Fuji CP742E
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GE

Agilent 3070...
Test Equipment

Lewis & Clark

Fuji XP-143E
Chipshooter

IBE

JOT Flat Belt
Conveyor

Recon

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

Apollo Seiko Scara Soldering Robot

TDK TDK AC-7 Through Hole Equipment

Visit Used Equipment Mart... Post Your Equipment Listing Free...

Forum

Baking assemblies after ultrasonic water wash

Posted by dyoungquist

We are using a water soluble flux which requires the assemblies to be cleaned in an ultra sonic cleaner after assembly. Is there a standard that specifies how long the assemblies need to be baked/dried ... »»

ROHS replacment parts

Posted by C111

We have had issues for the last 4-5 years with converting our stock from leaded to ROHS components. We are a CM and have customers who want all ROHS and some that are still leaded. The problems we run into are when we intrduce a new ROHS ... »»

Conformal Coating Equipment - Where to Start?

Posted by hoss67

We have a potential job coming up that would require coating with a silicone material (Humiseal 1C51 or equivalent) (...) I have no experience with automated coating and need some pointers on who's equipment I should be looking at... »»

More Forum Topics:

Conductive Corrugated Boxes...

Board houses...

BGA Pad Cratering...

Visit the Forum... Have a Question? Ask for Free...

Forum

PLC Troubleshooting Workshop - ATL

Seminar/Course | Business Industrial Network

Wed, July 22, 2009 | Stone Mountain Resort Area, Atlanta, GA, USA

You will receive extensive hands-on training with the lap top using RS Logix and your pick of the PLC5, or a SLC500 or a Micrologix PLC... »»

Ohio Valley SMTA Expo & Tech Forum

Trade Show/Exhibition SMTA

Wed, July 15, 2009 | Doubletree Hotel, Cleveland, OH, USA

Join the Ohio Valley SMTA Chapter for our tabletop exhibition and stay for free technical sessions, free lunch and the chance to network with leading suppliers to our industry!... »»

Six Sigma Green Belt Training - Measuring for Performance

Online Webinar | Whataboutquality LLC

Wed, July 29, 2009 |Online

Improve your business processes and increase your sales using our in-house Six Sigma training! Six Sigma training can help you alleviate the constant pressure to solve problems and make decisions... »»

More Events:

ControlLogix and RSLogix 5000 PLC Training Seminar...

Autotestcon 2009

Schematic Capture with Altium Designer...

Visit the Event Calendar... Add Your Event Now...

Career Center

Jobs:

Test Engineer

Tekmart International

Toronto, Ontario, Canada

We are seeking a hardware test engineer with indepth experience working on the HP and Teradyne In-Circuit testers. They must have experience in both software... »»

Independent Sales Representative

Precision PCB Services, Inc

USA

The sales representative would work independently from their home base on a commission basis. There will be no requirement for the sales rep to be present at our facility... »»

Product Manager

KIC

San Diego, CA, USA

The Product Manager's primary goal will be to act as liaison between customers and KIC R & D to help define future products while supporting the company's sales and marketing staff....»»

More Jobs:

RF �SUPER TECH� TEST TECHNICIAN...

SMT Process Engineer...

Design Engineer...

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Resumes:

Assembleon Instructor

Desired Field: Technical Support

Buford, GA, USA

Over 9 years of Assembleon Electronic Manufacturing Equipment training and support. Primary machine experience: FCM I, II, and Multi-Flex, ACM Micro and AX.... »»

SMT Consultant, Process Development

Desired Field: Research and Development

Boise, ID, USA

Over 20 years experience in SMT Process Development for large Contract Manufacturer. Specialist in Stencil Printing, Component Placement, Dispense... »»

Experienced Electronic Assembler/Solderer

Desired Field: Production , Quality Control

Gainesville, GA, USA

Strong mechanical background in building computers and systems. Experienced in soldering, assembly, and quality control techniques. Familiar with ISO 9001:2000 certification standards...»»

More Resumes:

Quality Control/Production and Management...

Experienced Engineer...

SMT Equipment Technician...

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Visit Career Center...

Industry Associations Events

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. Membership Info

SMTA Certification for SMT Processes and Six Sigma Green Belt

Bookstore

Next Event: Upper Midwest Expo & Tech Forum


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

Training & Certification Programs

Standards & Publications - Online Store

Next Event: IPC Executive Webcast Series: Solar Part II: Prepare to take Advantage of Solar - Opportunities in Mergers and Acquisitions


SMTnet Express
June 11, 2009

Subscribers: 25716

SMTnet Members:

Companies: 7656

Users: 26835

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