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SMTnet Express January 24, 2013, Subscribers: 26136, Members: Companies: 9096, Users: 34208

Technical Library

An investigation into low temperature tin-bismuth and tin-bismuth-silver lead-free alloy solder pastes for electronics manufacturing applications

The electronics industry has mainly adopted the higher melting point Sn3Ag0.5Cu solder alloys for lead-free reflow soldering applications. For applications where temperature sensitive components and boards are used this has created a need to develop low melting point lead-free alloy solder pastes.

Tin-bismuth and tin-bismuth-silver containing alloys were used to address the temperature issue with development done on Sn58Bi, Sn57.6Bi0.4Ag, Sn57Bi1Ag lead-free solder alloy pastes. Investigations included paste printing studies, reflow and wetting analysis on different substrates and board surface finishes and head-in-pillow paste performance in addition to paste-in-hole reflow tests. Voiding was also investigated on tin-bismuth and tin-bismuth-silver versus Sn3Ag0.5Cu soldered QFN/MLF/BTC components. Mechanical bond strength testing was also done comparing Sn58Bi, Sn37Pb and Sn3Ag0.5Cu soldered components. The results of the work are reported.

First published in the 2012 IPC APEX EXPO technical conference proceedings.

by: Jasbir Bath, Manabu Itoh, Gordon Clark, Hajime Takahashi, Kyosuke Yokota, Kentaro Asai, Atsushi Irisawa, Kimiaki Mori, David Rund, Roberto Garcia,; Koki Company Limited., Christopher Associates

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Forum search results for related keywords: lead-free solder alloy, sensitive component, low melting point, voiding

SMT / PCB Products

Valor® MSS Asset Utilization Software
Valor MSS Asset Utilization Software for PCB Assembly

Isolate and improve problem areas in PCB...

by: Mentor Graphics

SP700avi
Inline Stencil Printer
SP700avi Inline Stencil Printer

For high volume SMT production...

by: Speedprint

NanoClear®
Stencil Wipes

The best in class stencil treatment technology...

by: Aculon

ProntoPLACE SMT, Thru-hole Software
Unisoft ProntoPLACE SMT, Thru-hole Software

Be production ready in hours not days... Trial

by: Unisoft

iineo II Pick & Place System
iineo II Pick & Place

Extremely high feeder count...

by: Europlacer

HYDRON® WS 325
PCB Cleaning Agent
HYDRON WS 325 Cleaning and Defluxing Agent

For cleaning water soluble flux residues...

by: ZESTRON

Mark5 Series -
Reflow System
The Mark III Reflow System

Up to 40% reduction in nitrogen consumption...

by: Heller

Typhoon - Cleaning / Defluxing System
Typhoon - High Performance Inline Cleaning/Defluxing System

High performance inline system...

by: Aqueous...

SMT / PCB Equipment Auctions

X-Line Electronic Equipment Auctions

Surplus Late Model SMT Equipment from Major Contract Manufacturers - Feb. 4 - 5

by: X-Line Asset Management

Electronic Equipment Mart

Electrovert Bravo 8105
Reflow Oven
Electrovert Bravo 8105 Reflow Oven

Cardinal Circuit

all marketplace listings

MPM AccuFlex
Screen Printer
MPM AccuFlex Screen Printer

PPM

all marketplace listings

VJ Summit 1800
Rework Station
VJ Electronix Summit 1800

IBE SMT Equipment

all marketplace listings

Advantis 4983A
Pick and Place...
Universal Instruments Advantis 4983A AC-30L Pick and Place

X-Line

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Internet Marketing tip of the week

Internet Marketing Article 01-24-2013

Not being top in search results pages nowadays is like not being at the trade shows in the 70-90's.

There is no question whether you SHOULD spend a large portion of your marketing/advertising dollars on the web. The question is, why isn't your company moving more of its budget to online marketing?

Is your company scared of the detailed statistical feedback including insights to individual behaviors? The web can help your company obtain visibility in front of the right people - those who are looking for exactly what you sell.

The web can also reinforce brand recognition and prevent your company from losing market share. A sad but true story follows... one of my friends who is not an avid internet user (but when he does use the internet, he often researches products and buys online) said something that shocked me. We were discussing how being at the top of the search engines is very important to businesses worldwide and he said, "well, aren't the largest and best companies on top of the 1st page?". This basically means he was giving product legitimacy to companies who came up at the top of the search engines. Needless to say, this blew me away but then I started thinking.... If the largest companies actually spent what they should on the internet, he would probably be right. However, this is not the case and small companies are eroding brand power and market share away from the 'big boys' that don't invest in the internet the way they should... »»»

Roland Girouard, Managing Director, SMTnet

The SMTnet.com marketing team provides internet marketing consulting services for the SMT Industry.

Contact us for more information »

Events Calendar

DesignCon 2013
Jan. 29., Santa Clara, CA, USA

APEX Expo 2013
Feb. 19., San Diego, CA, USA

Career Center

Jobs:

Product Manager

Carlsbad, CA, USA | Nordson ASYMTEK

Senior Customer Service Engineer

Tampa, FL, USA | EUROPLACER

Product Inspector of Machined Parts

Tucson, AZ, USA | Verify Inc

Resumes:

SMT Process Engineer

Moline, IL, USA

Electronic Process Engineer

Brampton, Orlando, Canada

SMT Process Engineering Specialist

Kitchener, Ontario, Canada

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 | Bookstore

Next Event: Webinar (Free for Members!) Voiding Control and Reliability of Solder Joints with Backward Compatibility - February 7


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 Conference on Solderability and Reliability for Electronics Assemblies - February 6-7


Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

SMTnet.com, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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Capital Equipment Exchange - Used PCB Assembly Equipment

Martin EXPERT 10.6 - BGA Rework System

PCB Depaneling

Nordson Yestech - AOI Solutions

The next generation in jetting technology: The NexJet System

Insite B Bench Top AOI

Europe's No. 1 source for pre-owned SMT equipment

Valor MSS Process Preparation

Aegis Industrial Software

IBE - Used SMT Equipment

IPC Apex Expo 2013

Aquanox A4638 Flux Residue Cleaning Agent

Aqueous Cleaning

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