Indium Corporation introduces new Flip-Chip Flux for semiconductor devices

SEMICONDUCTORS Indium Corporation introduces new Flip-Chip Flux for semiconductor devices

2025-08-14 From Indium Corporation 1 min Reading Time

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Indium Corporation, a leading materials refiner, smelter, manufacturer, and supplier, today announced the global availability of WS-910 Flip-Chip Flux, a new water-soluble flip-chip dipping flux designed to meet the demands of cutting-edge semiconductor devices.

Indium Corporation's new WS-910 Flip-Chip Flux enhances semiconductor assembly with superior cleaning and high tackiness.(Source: © LuisAlfonso - stock.adobe.com) — Indium Corporation's new WS-910 Flip-Chip Flux enhances semiconductor assembly with superior cleaning and high tackiness.
(Source: © LuisAlfonso - stock.adobe.com)

WS-910 Flip-Chip Flux is designed to provide best-in-class residue cleaning for a water-soluble flip-chip flux, allowing for excellent compatibility with molded and capillary underfill. The new product also offers high tackiness for a flip-chip flux, which is useful when holding large die in place during the reflow process. WS-910 expands Indium Corporation’s extensive line of semiconductor assembly solutions, supporting advanced packaging and high-reliability applications.

Halogen-free WS-910 Flip-Chip Flux delivers several benefits to users, including:

High tackiness minimizes non-wet open defects and “cold joints”

Promotes excellent solderability onto a wide range of surfaces

Ensures consistent yields through consistent dipping performance over extended periods

Excellent cleaning with pure room-temperature deionized water

Designed for Pb-free applications and suitable for all high-Sn solders

Compatible with a wide variety of conventional ultrafiltration and modified ultrafiltration

Indium Corporation’s flip-chip flux series addresses common miniaturization challenges, including thin or warped substrates and fine-pitch, high I/O count assembly. The company offers fluxes in both water-soluble formulations and ultra-low residue no-clean options, which provide a sustainable, low-residue alternative to traditional water-soluble fluxes.

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