Indium Corporation® has expanded its portfolio of proven pastes with a new no-clean, halogen-free solder paste designed for advanced LED applications, including COB, COG, SMT, and other LED varieties.

LEDPaste NC38HF combines superior wetting performance with excellent stencil print transfer efficiency to satisfy the broadest range of process requirements for miniLED applications. It offers excellent printability down to 60-micron apertures. MiniLEDs typically feature a length of less than 240 microns on the component edge; this material offers excellent compatibility with the current size of miniLEDs and as future die continue to miniaturize.

LEDPaste NC38HF delivers:

  • Consistent and tight solder deposit spread across multiple prints and excellent response-to-pause characteristics
  • Minimal voiding on tight-pitch components, ensuring joint strength on small components
  • Industry-leading non-wet open (NWO) performance using superior oxidation barrier technology, enabling reduced solder ball and solder beading defects and enhanced graping performance
  • Enhanced slump performance with minimal bridging during the assembly process, improving yields for tight-pitch components

A proven product, LEDPaste NC38HF was recognized with an award for Excellent Product of the Year at the MiniLED conference in Shenzhen, China on Nov. 10.

For more information about Indium Corporation’s pastes for mini/microLED applications, contact Evan Griffith, product specialist – semiconductor and advanced assembly materials, at

About Indium Corporation

Indium Corporation® is a premier materials refiner, smelter, manufacturer, and supplier to the global electronics, semiconductor, thin-film, and thermal management markets. Products include solders and fluxes; brazes; thermal interface materials; sputtering targets; indium, gallium, germanium, and tin metals and inorganic compounds; and NanoFoil®. Founded in 1934, the company has global technical support and factories located in China, Germany, India, Malaysia, Singapore, South Korea, the United Kingdom, and the U.S.

For more information about Indium Corporation, visit or email You can also follow our experts, From One Engineer To Another® (#FOETA), at or @IndiumCorp.