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August 2007

Greetings!
This summer we have been working on a NEW SMT assembly class to teach engineers andtechnicians about SMT assembly both theory and practice.
The "alpha" class was well-received. The next regularly-scheduled class which features field trips to local companies, hands-on training to complement the in-class instruction will be held November 5-8.
We hope to see you at the new IPC Midwest show being held in Chicago in September or at one of the IPC standards sessions or at the Friday September 28th session on rework where we have lined up an interesting panel of rework presentations. Also, we invite you to see us in October at the SMTAI in sunny Florida where can learn first hand about device reballing.
in this issue
The following topics are covered in this end-of-summer newsletter:
Invitation to the IPC Midwest Lead Free Rework Session
Invitation to the SMTAI Practical Reballing Tutorial
Info on the new BEST SMT Assembly Class
NASA Learns About Soldering in Space
Have a safe and fun summer!!!!!
Bob Wettermann BEST Inc.
 
Lead Free Rework and Repair at IPC Midwest

Don't forget to sign up for the IPC Midwest show taking place in Chicago the week of September 28. Make sure to sign up for Session S12 entitled "Rework and Repair: If You HAVE to Fix It".

This session will focus on repair and rework, particularly in the area of lead free. Below are the session speakers and their topics:
Adding Lead Free to IPC-7711/21
Daniel Foster, STI Electronics, Inc.
Effects of BGA Rework Cycles on PCB Assembly Reliability
Jin Liang, EMC Corporation
Efficient Thermal Transfer for Lead Free Hand Soldering
Ray Cirimele, B E S T Inc.
Helium - Lead Free Rework
Mark Walz, VJ Electronix
Package on Package Rework for Lead Free
Ian Orpwood, OK International
QFN Rework Challenges in a Lead Free World
Neil O'Brien, Finetech, Inc.

 
Learn How to Reball -SMTAI Orlando Florida

Make sure to get your hands-on training with respect to reballing practices at SMTAI in Orlando Florida. Two of our master instructors will be leading a hands-on session on reballing. Look for Tutorial T4 entitled "Reballing Area Array Devices - A Practical Workshop". This will be held on October 7th from 1:30pm - 5:00pm.
This course is designed for those who want to learn the "tricks of the trade" with respect to BGA/CSP reballing. After a ¾ hour introductory session on various aspects of solder ball attachment, profiling and part handling, you will learn first-hand various reballing techniques. This hands-on session will cover the aspects of reballing using performs, metal stencils, or polyimide stencils. Inspection and JEDEC part requirements will be discussed.

 
NEW ! BEST SMT Assembly Class

The BEST SMT Assembly Class is now ready for its unveiling. There is a vast array of manufacturing experiences within our instructor staff ready to instruct students. This program is designed to educate students on the many different processes and materials used in mixed technology operations . It is a pragmatic, hands-on intensive one week program that provides students with the opportunity to learn, practice and understand the processes, tools, and materials used to properly manufacturing electronic assemblies. Teaching takes place at BEST in Rolling Meadows IL as well as other SME (Subject Matter Experts)s at the various places of business which are in close proximity to BEST.

The course is designed to teach students through classroom lectures, hands-on experiences both at BEST as well as surrounding commercial businesses. The goal is to provide students with in-class lecture as well hands-on lab time. The labs allow the opportunity for students to immediately apply the lessons learned during lecture. The latest manufacturing and processing equipment as well as techniques are featured in the class.

Call us today to discuss your SMT assembly class requirements at (847) 797-9250 and ask for Katy Radcliff.

 
Soldering in Space?

drink charm (Above) Scanning electron micrograph (SEM) image of the ISSI sample. Note the considerable, large and small porous holes in the sample

The In-space Soldering Experiment (ISSI), a project is run by NASA, is designed to promote understanding of joining techniques, shape equilibrium, wetting phenomena, and micro-structural development in space. In earth's gravity, soldering has a defined behavior and is reliant on gravity and convection to assist in solidification, joint shape, integrity, and microstructure. To better understand how solder behaves if processed in space, a systematic series of soldering samples was designed to investigate and understand porosity development, surface wetting, and equilibrium shape formation. After the samples were heated on orbit, they were returned to Earth for property testing and metallographic examination.

On Earth, soldering depends on gravity and convection for proper solidification, joint shape, joint integrity and microstructure. Some detrimental gas bubbles or void spaces form in the solder joint at contact surfaces. These voids reduce the thermal and electrical conductivity as well as provide sites for crack initiation. In the reduced gravity environment in orbit, bubbles have less chance to escape and weaker joints are more of a problem than on Earth.

The ISSI payload provided unique insight into microgravity soldering methods, which could play a fundamental role in maintaining the International Space Station as well as provide understanding of repair capabilities on future missions to the Moon and to Mars.

SOLDERING TIPS

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Newsletter

WHAT'S NEW?

VIDEO: BEST at APEX 2017 Convention

ARTICLE: To Bake or Not to Bake (in Rework)

 

 

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WHAT PEOPLE ARE SAYING ABOUT US

  • You Guys Freaking Rock with turnaround time.
    Thank you all SOOOOO much!!

    You Guys Freaking Rock with turnaround time.
    Thank you all SOOOOO much!!

    Welch Allyn

  • BEST is excellent in meeting delivery dates and are very good with clear communication of... View More..

    BEST is excellent in meeting delivery dates and are very good with clear communication of shipments, quantities, issues, etc. Their quality and technical assistance has been superb.

    RW Technologies

  • BEST has solid high quality service every time, and at the right price. They are very dependable. I... View More..

    BEST has solid high quality service every time, and at the right price. They are very dependable. I am able to start a project in less then 24 hours with no hassles. The teams always work to meet the demands placed on them by the customer, and are very honest about what they can do and when they can do it. They offer great value to the customer; they are willing to go the extra mile to make the customer happy.

    Motorola

  • Best has always come through when we needed them. We started using them for board repairs, now they... View More..

    Best has always come through when we needed them. We started using them for board repairs, now they assemble all of our boards. BEST is always responsive to our needs. On many occasions, we needed boards repaired immediately. They have always come through for us.

    Lovejoy Controls Corporation

  • Your company name exemplifies exactly what you are, the BEST!!!

    Your company name exemplifies exactly what you are, the BEST!!!

    Alpha Circuits

  • You guys are really soldering geeks. Keep inventing those cool products.

    You guys are really soldering geeks. Keep inventing those cool products.

    Analog Devices

  • …always are very friendly and try to accommodate my short lead times

    …always are very friendly and try to accommodate my short lead times

    Qualcomm

  • There was not doubt that Francisco know the material, how to present it, and how to make the class... View More..

    There was not doubt that Francisco know the material, how to present it, and how to make the class participants feel at ease..all of my guys came to me and how me how much they had learned.

    Alabama Power

  • Just wanted to let you know what a fantastic job/effort James put in too insure our guys were... View More..

    Just wanted to let you know what a fantastic job/effort James put in too insure our guys were thoroughly training and qualified. Everyone involved was very impressed with his knowledge, flexibility, and work ethic. We really appreciate the fact that he went above and beyond.

    EMAC

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