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SMTnet - where else would you meet over 500,000 industry professionals? Productronica 2015 - World's leading trade fair for electronics development and production.

SMTnet Express, August 13, 2015, Subscribers: 23,186, Members: Companies: 14,558 , Users: 38,745

Technical Library

Pad Cratering Susceptibility Testing with Acoustic Emission

Wong Boon San, Julie Silk; Agilent Technologies | Richard Nordstrom, Ph.D.; Acoustic Technology Group,; Agilent Technologies, Inc.

Pad cratering has become more prevalent with the switch to lead free solders and lead free compatible laminates. This mainly is due to the use of higher reflow temperature, stiffer Pb-free solder alloys, and the more brittle Pb-free compatible laminates. However, pad cratering is difficult to detect by monitoring electric resistance since pad cratering initiates before an electrical failure occurs.

Several methods have been developed to evaluate laminate materials' resistance to pad cratering. Pad-solder level tests include ball shear, ball pull and pin pull. The detailed methods for ball shear, ball pull, and pin pull testing are documented in an industry standard IPC-9708. Bansal, et al. proposed to use acoustic emission (AE) sensors to detect pad cratering during four-point bend test. Currently there is an industry-working group working on test guidelines for acoustic emission measurement during mechanical testing.

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Forum search results for related keywords: pad cratering, laminate, laminate material.

SMT / PCB Products

Inspection

Mirtec

Printing

Speedprint

Pick & Place

Count On Tools

Software

Unisoft

Software

Aegis Software

Pick & Place

Europlacer

Dispensing

GPD Global

Reflow

Heller

Pick & Place

Juki

Cleaning

ZESTRON

Software

DownStream Tech..

Printing

Apex Factory...

SMT / PCB Equipment Auctions

Jabil Shanghai

August 24-25 | X-Line Asset Management

Online SMT Exchange Auction - Featuring items From Libra Industries & Others

August 17-19 | Baja-Bid

Electronic Equipment Mart

Assembleon Topaz Xi

Pick and Place Equipment/Feeders

Tekmart International Inc.

Universal Instruments GC60 Chip Shooter With Feeders

Pick and Place Equipment/Feeders

X-Line Asset Management

Yamaha YV100XG

Surface Mount Technology Equipment

KD Electronics Ltd.

Panasonic RL-131 Radial Lead Inserter

PTH Equipment

Robo-Tek

Fuji XP-243E Pick & Place

Pick and Place Equipment/Feeders

IBE SMT Equipment

Conveyors

Conveyors

JMW Enterprises

Camalot FXD

Adhesive Dispensing Equipment

PPM

Speedline MPM Accuflex

Screen Printing Equipment

Capital Equipment Exchange

Heller 1707EXL

Reflow Ovens

Baja Bid

Events Calendar

2015 PCB Cleaning Webinar Series

Online Webinar | ZESTRON

SMTA International Conference & Exhibition 2015

Conference, Trade Show/Exhibition | September 27- October 1 | SMTA

Cleaning & Reliability Workshop

Seminar/Course | September 10 | Aqueous Technologies Corporation

productronica 2015

Conference, Trade Show/Exhibition | November 10 - 13 | Messe München GmbH

Career Center

Jobs:

Software Engineering

Littleton, CO, USA | Lockheed Martin Corporation

Sales Representative

Mexico | Apex Factory Automation

SMT Process Engineer

Milford, NH, United States | Wicked Staffing Solutions

Resumes:

Bachelor of Engineering in Electric and Electronics

Oppurg, Israel

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: Free Webinar: Power and High Temp Electronics Manufacturing - September 10

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: PCB West - September 15 - 17

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard

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

Used PCB Assembly Equipment - CE Exchange

Unique offering of multiple High-Speed SMT Placement Lines - Go-Dove Online Auction

Asymtek Spectrum II series scalable fluid dispensers for assembly of semiconductors, MEMS, storage devices, and PCBs

Soldertools.net - Rework Tools

Scienscope - Complete PCB Inspection Solutions

3D CT X-ray Inspection from SEC

Kyzen Free Cleaning Audit

Aegis FactoryLogix Paperless Shop Floor Software - Add value, reduce costs and eliminate risk in manufacturing.

ii-Feed intelligent pick and place feeder

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

HELLER - Choose an Oven for Your Reflow Needs

Whatever the SMT manufacturing need, JUKI has you covered.

MIRTEC - the Global Leader in PCB INSPECTION Technology.

Speedprint SP700avi inline SMT screen printer

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