防銅蝕的松香型焊錫絲特點：


助焊劑   合金組成(%)       助焊劑含量   熔點                 特征                                               
 HFS   R33(Sn-0.3Ag-3.0Cu) 3%，4%，6%  217-312℃   蘋果無鹵標準，預防
                                    銅（吃銅）現象，適用極細銅線、銅包鋁線等的焊接




 STER33(Sn-0.3Ag-3.0Cu)   3%，4%，6%    217-312℃            無鉛，預防銅蝕（吃銅）
                                               現象，適用極細銅線、銅
                                                  包鋁線等的焊接