Home > Products > ECO SOLDER

ECO SOLDER ®

Introduction

Lead-Free Initiative

The history of soldering goes back some 5,000 years, but fundamental soldering has always used Sn-Pb series solder that consists of tin and lead. However, lead pollution ground water has been recognized as an environmental problem and complete elimination of the use of lead is called for.

Realizing that protection of our environment is our task in the 21st century, SMIC has earnestly extended our research in this area and developed Lead-Free "ECO SOLDER."

Please contact us for any problem that relates to Lead-Free soldering. We are thoroughly prepared to introduce Lead-Free soldering system as we have a comprehensive technology base and have constructed support systems in various phases with ECO Soldering Solution.

* SMIC, ECO SOLDER, ECO Soldering Solution, ECOtronics and logotypes are trademarks or registered trademarks of Senju Metal Industry Co., Ltd.

JIS Z 3282 / ISO9453: Chemical composition of lead-free solders

Class Symbol SMIC Item
1 2
Sn 96.5
Ag 3
Cu 0.5
Sn 96.5
Ag 3
Cu 0.5
A30C5 M705
Chemical Composition Mass%
Sn Pb Sb Bi Cu Au In Ag Al As Cd Fe Ni Zn
Remain 0.05
max
0.10
max
0.10
max
0.3
to
0.7
0.05
max
0.10
max
2.8
to
3.2
0.001
max
0.03
max
0.002
max
0.02
max
0.01
max
0.001
max

 

ECO SOLDER

Lead-Free ECO SOLDER developed by SMIC offers high soldering reliability compared with the Sn-Pb series solder of the past and is available in a wide product lineup according to the required soldering temperature.

E series(antioxident type)and automatic feeding type for solder bath are also available.

Product availability may be limited for certain alloy compositions. Please select the appropriate product from the ECO SOLDER Products Guide below.

Low Ag Content Soldering Products for Cost Reduction

 

ECO SOLDER Products Guide

ECO
SOLDER
Alloy composition (wt%) Temp. (°C)
Form
Solidus
line
Peak Liquidus
line
BAR CORE BALL PASTE PRE
FORM
M-series: Solidus line temp. 200 to 250 °C
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
M709 Sn-0.5Ag-6.0Cu 217 226 378        
M760HT Sn-5.0Cu-0.15Ni-x 228 229 365        
M711 Sn-0.5Ag-4.0Cu 217 226 344        
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
M823 Sn-0.75Cu-1.5Bi-Ni-x 224 229 229        
M705RK Sn-3.0Ag-0.5Cu-x 219 221 221        
M20RK Sn-0.75Cu-x 227 229 229        
M35RK Sn-0.3Ag-0.7Cu-x 217 219 227        
L-series: Solidus line temp. under 200 °C
L20 Sn-58Bi 139 141 141
L29 Sn-58Bi-Sb-Ni 140 145 145        

- Peak temp. : Max. endothermic reaction point on DSC curve.
- Some alloy compositions may not be available in certain forms with special product size and grade.
- For inquiries regarding alloy compositions not listed above, please contact our sales representative or through our web site.