Zymet Debuts X2825 Underfill
Published: 17 March 2010
X2825 silica-filled board-level underfill encapsulant has a CTE of 26 ppm/°C. Is said to enhance drop and shock test reliability and provide thermal cycle performance. In one trial, thermal cycling of a BGA between -20° and +85°C, an unfilled version, with a CTE of 60 ppm/°C, resulted in first failure at 500 cycles; had no failures after 1500 cycles. Said to be reworkable at temperatures of 170° to 180°C.
Zymet, www.zymet.com
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