ALPHA SACX Plus 0307

Harmonization Code : 8001.20 | Unwrought tin: Tin alloys

Main features

Low dross formation
Excellent mechanical reliability
Made with Vaculoy technology

Product Description

ALPHA SACX Plus 0307 is a next generation lead-free alloy suitable for use as a replacement for SnPb, SAC305 and other low silver SAC alloys including the original SACX 0307 in wave solder, lead tinning and rework processes. SACX Plus 0307 has been engineered for improved copper dissolution performance during the long hot exposure times associated with rework and lead tinning. The SACX Plus 0300 variant is used as a replenishment alloy in solder baths with elevated copper levels. As with all Alpha Metals bar solder, Alpha’s proprietary Vaculoy®manufacturing process is used to remove certain impurities, particularly oxides. The product is further enhanced with the addition of other materials designed to further reduce drossing, increase wetting speed and force and improve joint cosmetics.

Product Key Features

Manufactured using Alpha’s proprietary Vaculoy® process to remove impurities and oxides
Enhanced copper control
Reduced dross formation
Superior wetting performance

Applications

Ideal for wave solder, lead tinning and rework processes.

Specifications
Additional Information

Technical Specifications

Thermal Properties
Coefficient of Thermal Expansion (CTE), α1 Coefficient of Thermal Expansion (CTE), α1 CTE α1 (alpha 1) is the slope of the Coefficient of thermal expansion in a temperature range below the Glass transition temperature (Tg). It explains how much a material will expand until it reaches Tg.	1.79e-5 ppm/°C
Coefficient of Thermal Expansion (CTE), α2 Coefficient of Thermal Expansion (CTE), α2 CTE α2 (alpha 2) is the slope of the Coefficient of thermal expansion in a temperature range above the Glass transition temperature (Tg). It explains the extent to which a material will expand after it passes Tg.	2.3e-5 ppm/°C
Liquidus Melting Temperature Liquidus Melting Temperature Liquidus, is the temperature point at which an alloy becomes completely liquid.	228 °C
Solidus Melting Temperature Solidus Melting Temperature Solidus is the temperature point at which a completely solid alloy starts melting and becoming softer.	217 °C
Specific Heat Capacity Specific Heat Capacity Specific heat capacity is the amount of heat energy required to raise the temperature of a substance per unit of mass. The specific heat capacity of a material is a physical property. It is also an example of an extensive property since its value is proportional to the size of the system being examined.	0.00017 J/(g⋅°C)
General Properties
Density Density Volumetric mass per unit	7.33 kg/m3
Mechanical Properties
Elongation Elongation Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.	21.8 %

Additional Information

Application Guidelines

ALPHA SACX Plus 0307 is suitable for wave soldering, lead tinning and reworking through hole and surface mount components in a lead-free process. It is suited to single side and relatively complex, dual sided mixed technology boards. A solder pot temperature of 255 to 265 °C (491 to 509 °F) is recommended with a contact time 2.3 to 3.5 seconds. For suitable wave solder fluxes, contact your local sales representative. Lead free Reclaim services including dedicated lead free containers is also available, consult your local Alpha sales office.