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Nihon Superior to Introduce Complete Range of SN100C Soldering Materials at APEX 2008

Mar 15, 2008

OSAKA, JAPAN � March 2008 � Nihon Superior USA, a subsidiary of Nihon Superior Co. Ltd., an advanced soldering supplier to the worldwide market, announces that it will showcase a new, expanded range of SN100C products in booth 249 at the upcoming APEX exhibition and conference, scheduled to take place April 1-3, 2008 in Las Vegas.

With its unique tin-copper-nickel-germanium alloy SN100C now firmly established as one of the global electronics industry�s most popular lead-free wave soldering alloys, Nihon Superior announces that it is extending the range of material forms in which the alloy is available.

Although developed initially to address the need for an economical wave solder, it has since been found that its properties also make SN100C an ideal choice for reflow and hand soldering as well as spheres for the attachment of area array packages.

The fluidity of SN100C, which is comparable to that of tin-lead, is one of the factors that contributes to excellent hole fill and minimal shorts in wave soldering. However, that property is also an advantage in hand soldering where, in combination with the right core flux (030), it makes possible the completion of more than 35 average joints per minute with a tip temperature of only 380�C. Nihon Superior is now offering the new eCore low-spatter lead-free flux-cored solder wire.

The 227�C melting point of SN100C was first thought to preclude its use in reflow soldering but when it was noted that tin-silver-copper alloys (such as SAC305 with a melting point of 217-218�C) are typically reflowed with a peak temperature around 245�C, it was realized that SN100C could be a drop-in replacement. Its high fluidity and excellent wetting properties mean that SN100C can be reflowed successfully at a lower superheat above liquidus than SAC alloys. Nihon Superior now offers two types of SN100C solder paste � no-clean ePaste for general reflow purposes and ePaste, a special low voiding paste for critical applications such as die attach in which heat transfer though the joint must be maximised.

As an additional ePaste, SN100C will now be available as a high-performance solder paste with a general purpose �P500� flux medium. Because of its high fluidity close to its melting point and fast wetting, SN100C P500 can be used as a drop-in replacement for SAC solder paste in reflow profiles that peak around 245�C. The P500 no-clean halide-free medium delivers excellent printability, long stencil life, good tack, excellent reflow and wetting on all substrates with no solder balls and minimal clear residue.

Advantages of the tin-copper system include its ruggedness in impact loading and the nickel addition provides inhibition of the intermetallic growth that can increase the susceptibility of joints to failure in shock loading, e.g. when a mobile phone is dropped. These properties are prompting the industry to evaluate SN100C in flip chip and area array packages, and Nihon Superior is supporting this new application by making a range of eBalls available.

While a wide range of fluxes can used successfully in wave soldering with SN100C, Nihon Superior also is now offering eFlux, a new flux that has been specially formulated for optimum results.

A solution for the lead-free HASL Process, SN100CL features excellent fluidity � good drainage ensures no bridges even on fine-pitch circuitry, good penetration of small diameter holes, uniform coating thickness and a smooth, bright finish. SN100CL wets quickly and offers low copper erosion. SN100CL forms a stable intermetallic compound layer (Cu/Ni/Sn layer) in between solder and copper laminate.

For more information about any of the above SN100C products, please visit Nihon Superior USA�s Booth 249 at APEX 2008.

About Nihon Superior Co. Ltd.

Nihon Superior was founded in 1966 when it began marketing unique flux products imported from the US. Since then, the company has made its mark by developing its own soldering materials and supplying them to the electronics industry. On the basis of its expertise in these technologies, Nihon Superior has developed a global business, by establishing manufacturing and sales centers in Asia and forming business partnerships with companies in Europe, America and Asia.

About Nihon Superior USA, LLC

Nihon Superior USA LLC was founded in 2007 as an affiliated company for distributing Nihon Superior Products in North America and Mexico.

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