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Comparing techniques for temperature-dependent warpage measurement

Featured ArticleCall for Papers

Comparing Techniques for Temperature-Dependent Warpage Measurement

Three full-field optical techniques, shadow moir�, fringe projection and digital image correlation (DIC), are used to measure temperature-dependent warpage for a PBGA package and a PCB component land site from room temperature to 250�C. The results are qualitatively similar, but imaging resolution and noise properties create offsets between coplanarity values. The paper summarizes strengths and weaknesses for each technique.

Dr. Jiahui Pan, Ryan Curry, Neil Hubble and Dr. Dirk A. Zwemer,  Akrometrix

Source: Global SMT & Packaging Magazine

Read article...

Featured New Products

The Mark III Reflow System

Pb Free Reflow Oven

Maintenance free. Lowest nitrogen and electrical usage. Integrated Cpk software at no charge!. Ultra fast cooling rates... »»

manufacturer: Heller

Dr. Dry

Humidity Controlled Storage Systems

Prevent no-lead soldering from wreaking havoc with your SM components & packages!...  »»

manufacturer: Manncorp


Gerber Translation Software. Download Trial

Imports raw Gerber data and allows the user to add intelligent information to the shapes on the display...  »»

manufacturer: Unisoft

More New Products:

Mirtec: MV-2HT Series...

Mydata: MY-Series Extended...

Aqueous Technologies: Trident Automatic Defluxing and Cleanliness Testing System ...

Featured auction

FUJI Machines - SMT Equipment


Sale Type: Online Auction

Sale Ends: Wed, March 19, 2008, 15:00 CET

Location of Assets: Frankfurt/Main, Germany

FUJI High Speed Chipshooter CP-643E - FUJI Multi-Function Mounter FIP-III 5000.



Featured video

Lead-free Point to Point Soldering Technique
(4 min. 11 sec.)


Best, Inc 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...

Equipment mart

Camalot Xyflex


Orbotech Trion...
AOI Inspection

Lewis & Clark

Fuji NXT H08 & H12
Placement Heads


Ersa EWS 500 F XL
Wave Solder


More Equipment Listings:

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

Siemens PCB camera...

Wave Solder machine with CE SXF...

Visit Used Equipment Mart...


New Feature: you can now upload pictures with your postings. »»

Automatic Paste Inspection worth it?

Posted by Grant

We have had a few vendors push automatic solder paste inspection devices on us in the past, and I have resisted until now. However we have a new product... »»

Any suggestion will be appreciated

Posted by omid_juve

We have PCB here that has a strange footprint on it. The details for the device that should be placed on this PCB is part no. PSD833F2-90MI, it has 3 different packages... »»

WSOL and solder pot

Posted by operator

I recently witnessed a process in which the solder pot operator used Techspray WSOL water soluble masking to cover the areas around a connector... »»

More Forum Topics:

Dye and Pry...

Assembly work instruction...

Does anyone remember the takt time formula for the reflow oven...

Visit the Forum...


SMTA Toronto Academy

Seminar/Course | SMTA

Wed, March 12, 2008 | IPC Headquarters, Bannockburn, IL, USA

In this course, we will identify and explain the basics of printed circuit board fabrication and the different troubleshooting techniques... »»

IPC Designers Summit

Seminar/Course | IPC

Mon, March 31, 2008 | Las Vegas, NV, USA

This summit offers you a focused design program as well as access to other critical parts of the supply chain. In one trip, get information you won�t find anywhere else.... »»

Electronic Circuits World Convention 11

Conference | IPC

Mon, March 17, 2008 | Shanghai, China

The purpose of the ECWC is to provide technologists involved in electronic manufacturing with a forum for the interchange of technical and management concepts... »»

More Events:

Random Vibration & Shock Test Training...

Fundamentals and Practice of ESS, HALT and HASS...

STPCon - Software Test & Performance Conference...

Visit the Event Calendar...

Career Center

Master Scheduler

Daktronics, Inc.

Brookings, SD, USA

Develop and manage the master production schedule (MPS) in conjunction with contract due dates. 1.1. Level 1 MPS= Final Assembly 1.2. Level 2 MPS=sub-assemblies... »»

Manufacturing Engineer

Superior Engineering

Chicago, IL, USA

We are looking for a Degreed Manufacturing Engineer that has 1-2 years of experience dealing with SMT. Full time position, full time benefits, no relocation assistance... »»

SMT Programmer/Operator

Jeron Electronic Systems, Inc.

Chicago, IL, USA

The ideal candidate has experience programming, setting-up, and running SMT placement machines. Additionally, this position requires experience with SMT processes...»»

More Jobs:

Memory Architect/Product Engineer...

In Process Testing / QA Inspector...

SMT Machine Operator...

Visit Career Center...

Industry Associations Events


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


Next Event: Tour of Birck Nanotechnology Center - Purdue Univ.


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

Standards & Publications

Online Store

Next Event: Webcast: Assuring Product Reliability Through Accelerated Testing

SMTnet Express
March 13, 2008

Subscribers: 28216

SMTnet Members:

Companies: 6885

Users: 23430

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