Alliage SN403100C
Alloy S-99.3 Cu0.7 NiGe
S-Sn99Cu1 (NiGe) according to standard DIN EN ISO 9453 : 2014
General Characteristics
Lead-free solderings in wave and selective soldering units. A usage in older wave soldering units is also possible, whose pots and nozzles are made of V2A and do not have protective gassing. The experience of our customers shows that most applications can be done without inert gas.
Properties
Beside the well-known advantages of Ni-endowed solders our alloy reaches by adding of germanium improved wetting qualities on all common surfaces in the electronic production and lowest dross formation in comparison to all other lead-free solders.
SN100C has a wide soldering temperature window and is applicable in selective soldering processes from 265° C as well as in dip soldering processes up to 350° C. With increasing soldering temperature, however, it is to be expected an increasing GE-consumption as well as an intensified Cu-removal!
Physico-Chimical Characteristics
| Alloy | Sn100-403C (Sn99,3Cu0,7NiGe) |
| Melting temperature in °C | 227 (eutectic) |
| Soldering temperature in °C | 260 – 270 |
| Density in g/cm³ | 7,4 |
| Specific heat of fusion J/g | 61,0 |
| Surface tension mN/m * | 542,45 |
| Electrical conductivity in µWm | 13,0 |
* données de FHG/IZM Berlin
| Element | Sn | Cu | Ag | Ni | Ge | Pb | Au |
| Content (%) | Rest | 0,6 – 0,7 | max. 0,05 | 0,04 – 0,06 | 0,005 – 0,007 | max. 0,05 | max. 0,03 |
| Element | Al | As | Bi | Cd | Fe | Sb | Zn |
| Content (%) | max. 0,001 | max. 0,03 | max. 0,03 | max. 0,002 | max. 0,02 | max. 0,05 | max. 0,001 |