批发供应BLL-707无铅焊锡条

Sn-Pb焊料以其优异的性能和低廉的成本一直成为电子组装中的焊接材料，但是铅及其化合物属于有害物质，在二十世纪九十年代初，对于环保意识较强的欧盟已通过ROHS法案限制铅的使用，并明确规定从2006年7月1日起执行。我司投入大量的研究精力，自2007年起已批量生产无铅焊料系列产品，已符合国际环保要求。适用于手浸焊、波峰焊接线路板，焊点光亮，产渣量少，工作温度为高于熔点40～60℃作业最佳。                        牌号            合金成份（wt%)            熔点（℃）            比重（g/cm3)            建议用途                            固相线            液相线                            BLL-101A            Sn99.95            232            232            7.28            波峰炉添加，            降铜含量                            BLL-703A            Sn-Cu0.3            227            230            7.31                            BLL-705A            Sn-Cu0.5-Ni            226            226            7.32            线路板手浸焊、            波峰焊                            BLL-707A            Sn-Cu0.7            227            227            7.32                            BLL-303A            Sn-Ag0.3-Cu0.7            217            228            7.33                            BLL-330A            Sn-Ag3.0-Cu0.5            217            218            7.40            适用于元器件脚、裸铜线浸锡及线路板喷锡工艺，工作温度为300～380℃ 中温作业。                        牌号            合金成份（wt%)            熔点（℃）            比重（g/cm3)            建议用途                            固相线            液相线                            BLL-101            Sn99.95            232            232            7.28            添加锡，降铜含量                            BLL-705            Sn-Cu0.5-Ni            226            226            7.32            喷锡开缸用                             BLL-705N            Sn-Ni0.02            230            232            7.28            喷锡添加用                            BLL-707            Sn-Cu0.7            227            227            7.32            元件脚、裸铜线含浸            适用于漆包线、变压器一次脱漆、快速上锡等，工作温度为400～480℃作业最佳，锡面光洁不起膜，为变压厂首选产品。                        牌号            合金成份（wt%)            熔点（℃）            比重（g/cm3)            建议用途                            固相线            液相线                            BLL-707B            Sn-Cu0.7            227            227            7.32            漆包线、变压器浸锡                            BLL-330B            Sn-Ag3.0-Cu0.5            217            218            7.40            适用于电子温控元件、消防报警器、高级建筑群、粮库、高压食品器具、特殊变道工艺、下班陶瓷焊件、模具造型制造等工艺。                        合金成份（wt%)            熔点（℃）            建议用途            合金成份（wt%)            熔点（℃）            建议用途                            Sn-Cu-Bi            200            220℃左右焊接            Sn-Bi            138            180℃以下温度焊接                                    类别            熔点（℃）            抗张强度（kgf/mm3)            延展性（%）                            Sn-Ag-Cu            217            5.3            27                            Sn-Ag            221            4.7            33                            Sn-Cu            227            3.3            48                            Sn-Bi            138            3.3            33            ★其它规格可依客户需求提供