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SMTnet Express, August 7, 2014, Subscribers: 23058, Members: Companies: 13975, Users: 36604

Technical Library

Gold Embrittlement In Lead-Free Solder.

Craig Hillman, Nathan Blattau, Joelle Arnold, Thomas Johnston, Stephanie Gulbrandsen; DfR Solutions, Julie Silk, Alex Chiu; Agilent Technologies.

Gold embrittlement in SnPb solder is a well-known failure mechanism in electronic assembly. To avoid this issue, prior studies have indicated a maximum gold content of three weight percent. This study attempts to provide similar guidance for Pb-free (SAC305) solder. Standard surface mount devices were assembled with SnPb and SAC305 solder onto printed boards with various thicknesses of gold plating. The gold plating included electroless nickel immersion gold (ENIG) and electrolytic gold of 15, 25, 35, and 50 microinches over nickel. These gold thicknesses resulted in weight percentages between 0.4 to 7.0 weight percent.

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Forum search results for related keywords: gold, embrittlement, SAC solder, shear testing, thermal cycling, intermetallic.

SMT / PCB Products

MS-15 Series
In-Line SPI Machine

Inspection

Mirtec

LF-4300
Solder Paste

Solder Materials

AMTECH

HYDRON® WS 400 - OA defluxing at 3%-5% Concentration (new!)

Cleaning

ZESTRON

X-eye SF160ACT
3D CT Analysis

Inspection

SEC

SMT Nozzles
and Consumables

Pick & Place

Count On Tools

EXCEN FLEX a Dual Gantry Chip Mounter

Pick & Place

SAMSUNG

Quantum™ Large-Format Fluid Dispenser (new!)

Dispensing

Asymtek

SP700avi
Stencil Printer

SP700avi Inline Stencil Printer

Printing

Speedprint

MAX II High Precision Fluid Dispenser

Dispensing

GPD Global

Mark5 Series -
Reflow System
The Mark III Reflow System

Reflow

Heller

Lzero3 Storage and Retrieval Cabinet

Material Handling/Storage

Europlacer

AQUANOX®
Aqueous Cleaners

Cleaning

Kyzen

SMT / PCB Equipment Auctions

Exchange Auction #40 � Surplus Assembly and Test Equipment.

August 4 - 5
X-Line Asset Management

Surplus to the Ongoing Operations of Nokia. 1000+ SMT Equipment Lots.

August 19 - 22
Heritage Global Partners

Electronic Equipment Mart

Camalot FXD

Adhesive Dispensing Equipment

PPM

DEK 248 Screen Printer

Screen Printing
Equipment

IBE SMT Equipment

Speedline Electrovert Omni 7E Reflow Oven

Reflow Ovens

CE Exchange

Assembleon
Topaz XII

Pick and Place Equipment

X-Line

ETA E10
Lead-free

Reflow Ovens

Shenzhen ETA

Smart Move 71" Flatbelt Conveyor

Conveyors

JMW Enterprises

Koh Young
KY-3030VAL

in: Inspection
Equipment

AdoptSMT Europe

Yamaha
YG200 & YS12

Pick and Place
Equipment

Shenzhen Tek...

Events Calendar

Philadelphia Expo & Tech Forum

Cherry Hill, NJ, USA | August 12 | SMTA - We will discuss material selection, current electronics research, and failure analysis...

Technical Study: Cleaning Bottom Termination Components - Online Webinar

Online | August 21 | ZESTRON Corporation - Learn how to define and validate the optimal cleaning process parameters...

NEPCON South China 2014

Shenzhen, China | August 26 - 28 | Reed Exhibitions - One of the most important trade events for South China�s SMT industry...

Career Center

Jobs:

Eastern Region Technical Sales Manager

Manchester, NH, USA | Finetech

Sr. Mechanical Engineer

San Diego, CA, USA | Nordson ASYMTEK

Sales Manager

Albany, NY, USA | Yincae Advanced Materials

Resumes:

Asst.Manager Manufacturing &QC

Bangalore, India

SMT Machine Operator

Mesa, AZ, USA

Manufacturing Engineer /Smt programmer

Sullivan, OH, USA

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: Philadelphia Expo & Tech Forum - August 12

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 Southeast Asia High Reliability Conference - August 20

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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Used PCB Assembly Equipment - CE Exchange

Surplus to the Ongoing Operations of Nokia. Global Auction of 1,000+ SMT and Test Equipment Lots.

Software for PCB Manufacturing - Unisoft

PCB Equipment Auctions - X-Line

PCB Cleaning products - Zestron

ii-Feed tape feeding solution for Europlacer machines

SMTAI 2014

Fluid Pressure Control - a breakthrough in uniform fluid dispensing - GPD Global

Mark5 SMT Reflow Oven - Heller

SP700avi inline smt screen printer - Speedprint

Global Source for Advanced SMT Solder Products - Amtech

Quantum Series In-Line, Large-Format Fluid Dispensing for SMT, PCB, and MEMS - Nordson Asymtek

Used SMT Equipment - IBE

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