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Thermal Residue Fingerprinting: A Revolutionary Approach to Develop a Selective Cleaning Solution

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Thermal Residue Fingerprinting: A Revolutionary Approach to Develop a Selective Cleaning Solution

During the last 5 years, the processes to remove flux residues especially for lead-free and challenging geometries have demonstrated new cleaning obstacles which have to be overcome. A new methodology has been recently developed to further increase the propensity for successful cleaning. At the core of this method is the thermal identification of the residue matrix. (...)

The Thermodynamic Nature of Flux

Experience indicates that softer residues are easier to clean than hard residues. What makes a residue hard is inherent in its make-up and history. The thermal history of a flux residue is important. The number of solder reflow cycles, the peak temperature, time after reflow and duration of the heating and cooling cycle will influence the hardness and thus, the cleanability of the residue.

Credit / Source:
Steve Stach / Austin American Technology,
Harald Wack, Ph.D., Umut Tosun, Naveen Ravindran / ZESTRON America,
John M. Radman, Daniel D. Phillips / Trace Laboratories East

Read Article...

Featured New Products

MV-7 Series

In-Line AOI Machine

Designed to automatically inspect for manufacturing defects both pre and post reflow. In-line capability for increased throughput... »»

Offered by: Mirtec


Pick & Place System

4-Head dual - gantry machine with placement speed of 10,500 cph! Dual smart feeder trolleys included boost capacity »»

Offered by: Manncorp


Download Trial

Programs most popular machines, converts CAD or GERBER files to finished selective soldering files... »»

Offered by: Unisoft

More New Products:

Heller: The Mark III Reflow System...

VeriClean: Flux Remover, Degreaser

VJ Electronix: Summit 750 Rework System...

Featured auction

Avanex OIF SAS - Test & Measurement Equipment

GoIndustry DoveBid

Sale Type: Online Auction

Beginning Date: Fri, July 03, 2009

Ending Date: Thu, July 09, 2009

Location of Assets: France

Assets to be disposed of by Avanex now part of the Oclaro Corporation following the merger of Avanex Corporation and Bookham Corporation earlier this year


SMT/BGA/BTC/LF Courses by Ray Prasad in Portland

Ray Prasad Consultancy Group

Ray Prasad Consultancy Group is pleased to announce that Mr. Ray Prasad will be teaching a three day in-depth course on SMT, BGA & BTC Design and Manufacturing in Portland, Oregon on July 20-22, 2009 (Monday- Wednesday).

We will also be offering a two day in-depth RoHS and Lead Free Course on July 23-24, 2009(Thursday-Friday) in Portland, Oregon.

Ray Prasad also offers these and other customized courses at your site. Please contact us for details.


Equipment mart

Fuji CP742E
Placement System


Agilent 5DX S 5000

Lewis & Clark

Fuji XP-143E


Vitronics 6622CC
Pb-free Wave Solder


More Equipment Listings:

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

Speedline Bravo 8105 Lead Free Reflow Oven

Speedline Gemini 2 Adhesive Dispenser

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

Learn More...


0201 PCB Masking Tolerance

Posted by Mark.H

My company has done loads of 0402 placements but are now required to start looking at 0201 and micro BGA placements. I�ve done loads of research... »»

Clamshell Fixture Accessories

Posted by Craig

I'm building a clamshell test fixture. I have all the pins and sockets to make a bed of nails. I purchased an enclosure. Everything else is pretty standard. I do not however have any information on pushpins... »»

ESD....Limiting Resistor

Posted by Nuez

I need some help in setting straight QA which owns our ESD Procedures. 1.) Is the limmiting resistor for personel safety or to slow down ESD discharge? Everything I have read indicates it is for personnel safety... »»

More Forum Topics:

Zevatech Z Axis fault...

Equipments required for making SMD PCB's...

HASL Pictures...

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


IPC-A-610D Training

Seminar/Course | Precision Pcb Services, Inc.

Mon, July 06, 2009 | Oroville, CA, USA

This latest version D of the IPC-A-610 presented in a one day class is a MUST for all quality assurance and assembly departments. IPC-A-610D illustrates industry accepted workmanship criteria for electronics assemblies... »»

Design and Assembly Challenges of Ball Grid Arrays (BGAs) and Bottom Termination Components (BTCs)

Online Webinar SMTA

Tue, July 07, 2009 | Online

The objective of this two session webinar is to identify the design and process issues in BGAs and BTC and the impact of lead free that must be resolved for an effective implementation of mixed assembly electronics products for both tin lead and lead free... »»

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

Fundamentals of Random Vibration and Shock Test Training...

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

Career Center


QA Inspection

Task Micro Electronics

Kirkland, Quebec, Canada

Contract Electronic Manufacturer of PCB Assemblies seeks experienced QA Inspector with CLUSO VISION SYSTEMS First Article Inspection experience... »»

Sale Representative

Zoomic Electronics (M) Sdn Bhd


This is a position where the candidate is required to have knowledge in custom wire-harness, cable assembly, PCB assembly (both PTH & SMT)... »»

SMT Lead Operator

VR Industries

Warwick, RI, USA

SMT Operator/Technician: SMT process and Mydata experience required. Programming and maintenance skills a plus. Must be flexible with hours. Good rate/benefits...»»

More Jobs:


SMT Process Engineer...

Design Engineer...

Post Job Listing for Free...


Sales/Marketing Professional

Desired Field: Sales/Marketing

Duluth, GA, USA

Over 20 years of experience selling high tech capital equipment for manufacturing. Accomplished in territory management, regional sales management... »»

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...»»

More Resumes:

Quality Control/Production and Management...

Experienced Engineer...

SMT Equipment Technician...

Post Your Resume for Free...

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: Ohio Valley Expo & Tech Forum


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
July 02, 2009

Subscribers: 25719

SMTnet Members:

Companies: 7702

Users: 27024

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Lewis & Clark


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