Oneida Research Services, Inc.
:: Corporate Member News ::

:: K&S Launches New Gold Wire Engineered for High-Density Packaging (full story)

:: MicroScreen’s Web Site Now Available in Multiple Languages (full story)

:: Photo Stencil Develops Lead-Free Instrusive Reflow Solution (full story)

:: Corporate Fast Links ::

Click below to learn more about this issue's featured corporate members.

Miyachi Unitek
AI Technology
Umicore AG

All IMAPS Corporate Members will have the opportunity to place their logo/link in the "Fast Links" section. To have your company logo included in an upcoming "Fast Links," email your logo as a JPEG or GIF to Brian Schieman at You should also identify which URL to link your logo to. If you have questions, contact Brian at 202-548-8715. There is no charge for this service, it is offered as part of the corporate membership benefits.

:: More Information ::

:: Only news about IMAPS Corporate Members will be published in this Corporate Bulletin. Please send your electronic press releases to Ann Bell,, at least 3 days before the first or fifteenth of every month to be considered for publishing in this bulletin.

:: For advertising opportunities, please contact Ann Bell at or 202-548-8717.

:: To have your company logo included in an upcoming "Fast Links," contact Brian Schieman at or 202-548-8711.

:: For comments and questions about this e-mail newsletter, please contact Brian Schieman at or 202-548-8715.

K&S Launches New Gold Wire Engineered for High-Density Packaging

Kulicke & Soffa Industries, Inc. announces a new gold wire, branded Formax™, which is designed for all types of stacked-die and multi-tier applications.  This new bonding wire offers highly accurate and consistent loop profiles, providing higher wire bond yields.  The Formax wire improves linearity and stability, while achieving higher molding results.

Jack Belani, senior vice president for K&S Packaged Materials and Corporate Marketing, stated,” Our new Formax product is the next-generation in wire technology, which was developed from our proven and growing family of gold bonding wire.”  He continued, ”Formax is the next engineering step from Radix and Radix Plus, offering higher strengths as well as lower heat and affected zone ranges.”

Customer data has shown that Formax delivers higher, accurate and more consistent loop profiles in a wide range of complete packages with higher yields.  Additionally, this wire has versatile looping capabilities, with loop heights of less than 3 mil to over 16 mil, with wire span up to 320 mil using a 1-mil wire diameter wire.

Klaus Dittmer, director of K&S Bonding Wire, added, “Our new Formax wire has extremely robust bondability for first and second bonds, giving our customers higher bond test results.”  The proven intermetallic stability of the Formax gold bonding is based on K&S’ 3N gold composition.
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MicroScreen’s Web Site Now Available in Multiple Languages

MicroScreen LLC has announced improvements to its web site at   The site offers visitors easier access to up-to-date needed technical information on stencils and screens. 

In addition to English and Spanish, the site is now also available in Chinese.

For those who speak and write Chinese, the coordinator is Tian Rong.  She has been with MicroScreen for over one year and specializes in design and editing for stencil fabrication.  Tian is also trained to work with screen data and order entry. Her experience with MicroScreen’s products is an advantage to both our customers and MicroScreen.

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Photo Stencil Develops Lead-Free Instrusive Reflow Solution

Photo Stencil has developed a new process – “Intrusive Reflow of Lead-Free Solder Paste.” The resulting paper outlines a procedure that increases efficiency for process engineers by eliminating the wave soldering process altogether.

Dr. Bill Coleman, vice president of technology for Photo Stencil wrote the paper and ran tests to improve the printing process for lead-free materials. In the intrusive reflow process, solder paste is printed on and around the through-hole area, as well as in the through-hole itself. Through-hole devices are placed along with the SMT devices and processed together during reflow.

One objective of the study was to maximize the amount of solder paste printed into the through-hole (% hole fill). With proper squeegee speed and squeegee angle, 100% hole fill was achieved for 63 mil thick boards and 85% hole fill for a 93-mil thick boards with a 6 mil thick stencil. This resulted in good top and bottom fillets and continuous solder fill around the pins with a 6 mil thick stencil for both 63 and 93 mil thick boards for resistors, DIPs and four row header arrays.

“Results of the study are very encouraging since, with proper pin-to-hole ratios and screen printer set-up, a 6-mil stencil is successful in providing good lead-free through-hole solder joints,” explains Dr. Coleman.

X-ray pictures of paste hole fill and cross-section pictures of through-hole pins after reflow are shown in the paper. To download the paper in full, please visit
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View the Corporate Bulletin Archives

:: Issue 32 ::
June 15, 2007

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