Product News: Materials & Material Processing

Solder Pastes help reduce potential for tombstoning.

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Press Release Summary:

February 11, 2014 - Offered as option with solder paste fluxes, anti-tombstoning solder pastes are suited for use when it is difficult to change reflow profile. Modification of alloy to introduce melting range results in equalization of wetting forces. Because of this, small components are prevented from tombstoning. Optimal wetting characteristics apply to all surface finishes, including OSP, Ni/Au, Ni/Pd/Au, Sn, and Ag. No-clean and water-soluble, as well as lead-free and leaded formulations, are available.

Fct Assembly

1309 N 17Th Ave, Greeley, CO, 80631, USA

Original Press Release

FCT Assembly Develops Anti-Tombstoning Paste Formulation

Press release date: February 1, 2014

GREELEY, CO – FCT Assembly is pleased to announce that it now offers a variety of anti-tombstoning solder pastes as an option with each of its solder paste fluxes. The anti-tombstoning solder pastes present an excellent way to reduce the potential for tombstoning.

Tombstoning occurs when components lift up during reflow causing an open pad at one end. This typically occurs when one solder paste deposit reflows before the other. Tombstoning is commonly found on circuit boards that have a ground plane attached to one end of a small component. This creates a temperature difference from end-to-end of the component during reflow.

FCT’s new anti-tombstoning solder pastes are ideal for use when it is difficult to change the reflow profile. FCT achieves anti-tombstoning properties through modification of the alloy to introduce a melting range. This equalizes wetting forces, which prevent small components from tombstoning. The pastes feature excellent performance when tombstoning is a concern and excellent wetting characteristics on all surface finishes, including OSP, Ni/Au, Ni/Pd/Au, Sn and Ag. Additionally, the pastes are available in no-clean and water soluble as well as lead-free and leaded formulations.

For more information about FCT Assembly’s Anti-Tombstoning formulation, visit http://www.fctassembly.com/tombstoning.php. To download a Technical Data Sheet, visit http://www.fctassembly.com/tds.php.

About FCT Assembly
FCT Assembly consists of three divisions: FCT Solder, Fine Line Stencil and A-Laser. FCT Assembly is a leading and innovative manufacturer of lead-free and leaded solder products, superior quality stencils and precision laser-cut parts with multiple locations throughout North America.

FCT Assembly strongly believes in taking a multi and interdisciplinary approach when developing new products and processes. With expertise in micro-machining, metallurgy, chemistry and polymer technology, FCT Assembly is well positioned to develop products to meet technology challenges and satisfy customer demands.

For more information, visit www.fctassembly.com.

CONTACT:          
Derek Stuart
National Sales Manager
1309 North 17th Ave.
Greeley, CO 80631
E-mail: dstuart@fctassembly.com
Web site: www.fctassembly.com

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