Fluxless Reflow (Formic Acid)
无助焊剂回流炉(酸性气体炉)
Heller Industries has developed fluxless reflow which utilizes Formic Acid(HCOOH)to replace standard flux agents.Formic Acid has been shown to be an effective reducing agent in fluxless solder reflow.It eliminates the need for pre-reflow fluxing and post-reflow flux cleanup steps.Heller industries can map the formic acid concentration profile and reduce 02 ppm to~-10 ppm for bumping application.Excellent results demonstrated for wafer bumping application and C4 Flip Chip process.
Heller的酸性气体炉,使用酸性气体(HC00H)实现无助焊剂焊接;提供实时酸性浓度曲线,氧含量可在10ppm以下,焊接效果优良;优化工艺流程,无需助焊剂涂布工艺,也无需助焊剂清洗工艺。