Sparkle 千住锡丝产品系列自从昭和30年(公元1995年)上市以来， 针对各种合金及不同的用途做了各种研究开发的动作，成功的开发出信赖性高的商品，对于电子工业的发展也有着极大的贡献。无论是在生产的过程中或者是产品的良质度上，与国内外的Solder制造商相比，都是名列前茅的。

千住锡丝ECO SOLDER RMA02 M705 P3
无色残渣.高信赖性，ECO SOLDER RMA02是根据美国联邦规格QQ-S-571之高信赖性的松香芯锡丝。焊接时因为锡球和FLUX飞溅减少，FLUX残渣为无色透明，可漂亮地完成焊接。另外有耐腐蚀性、高绝缘性的FLUX。 ECO SOLDER RMA02的低飞溅特性ECO SOLDER HVP

千住锡丝也叫焊锡线，焊锡丝是一种焊接材料，焊锡丝是由锡合金和助剂两部分组成，焊锡丝中由锡63%和铅37%组成的焊锡被称为共晶焊锡，焊锡丝特点如下：
1.焊锡丝的熔点是183度。当锡的含量高于63%,溶化温度升高,强度降低.当锡的含量少于10%时,焊接强度差,接头发脆,焊料润滑能力变差.理想的是共晶焊锡.在共晶温度下,焊锡由固体直接变成液体,无需经过半液体状态.共晶焊锡的熔化温度比非共晶焊锡的低,这样就减少了被焊接的元件受损坏的机会.同时由于共晶焊锡由液体直接变成固体,也减少了虚焊现象。
2.一般无铅焊锡丝的焊锡熔点较高，在227℃左右，不同焊锡材料的焊锡丝，熔点也不会相差很大，所以在使用焊锡丝前，先了解自己的焊件能承受多高的温度，然后再选择焊锡熔点适宜的无铅焊锡丝。目前市面上常用的几种无铅焊锡丝规格及其焊锡熔点。

千住金属松香芯焊锡丝的合金清单，展示了不同合金的熔点温度.
ECOSOLDER 合金成分 (wt%)                      熔融温度 (℃ )     固相线     峰值温度      
                                          
M705 Sn-3.0Ag-0.5Cu                                   217                   219         220 
M30 Sn-3.5Ag                                                221                   223         223
M31 Sn-3.5Ag-0.75Cu                                   217                   219          219 
M714 Sn-3.8Ag-0.7Cu                                   217                   219          220 
M715 Sn-3.9Ag-0.6Cu                                   217                   219          226
M710 Sn-4.0Ag-0.5Cu                                   217                   219          229 
M34 Sn-1.0Ag-0.5Cu                                     217                   219          227
M771 Sn-1.0Ag-0.7Cu                                   217                   219          224
M35 Sn-0.3Ag-0.7Cu                                     217                   219          227 
M20 Sn-0.75Cu                                              227                   229          229
M24MT Sn-0.7Cu-Ni-P-Ge                            228                   230          230 
M24AP Sn-0.6Cu-Ni-P-Ge                             227                   228          228
M805E Sn-0.3Bi-0.7Cu-P                               225                   229           229 
M40 Sn-1.0Ag-0.7Cu-Bi-In                            211                   222           222 
M47 Sn-0.3Ag-0.7Cu-0.5Bi-Ni                       216                   228           228 
M773 Sn-0.7Cu-0.5Bi-Ni                                225                   229           229 
M794 Sn-3.4Ag-0.7Cu-Bi-Sb-Ni-x                 210                   221            221 
M731 Sn-3.9Ag-0.6Cu-3.0Sb                         221                   224            226 
M716 Sn-3.5Ag-0.5Bi-8.0In                           196                    208           214 
M10 Sn-5.0Sb                                                240                    243           243 
M14 Sn-10Sb                                                 245                    248           266
M60 Sn-2.3Ag-Ni-Co                                     221                    222           225 
M770 Sn-2.0Ag-Cu-Ni                                   218                    220           224
M758 Sn-3.0Ag-0.8Cu-Bi-Ni                          205                    215           215 
M806 Sn-3.5Ag-0.8Cu-Bi-Ni                          203                    214           214 
M807 Sn-3.5Ag-0.8Cu-Bi-Ni                          214                    219           219 
M725 Sn-0.7Cu-Ni-P                                      228                    230           230
M84 Sn-3.0Ag-0.5Cu-Ni                                 219                    223           324
M86 Sn-0.3Ag-0.7Cu-Ni                                 220                    232           330 
L-series 固相温度 200℃未満
L20 Sn-58Bi                                                     139                    141           141
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