Solder Paste

The Mechanic XG-50 is a highly popular leaded solder paste widely used by electronics technicians for surface-mount technology (SMT/SMD) assembly, BGA reballing, and precise PCB repairs.

Key Specifications

According to manufacturer specifications listed on Electron Components, the core technical attributes include:

• Alloy Composition: Sn63/Pb37 (63% Tin, 37% Lead) — a eutectic formulation that transitions instantly between liquid and solid states without entering a semi-solid state.
• Melting Point: 183°C (361°F).
• Particle Size: Type 3 (25–45 microns), allowing smooth dispensing through stencils or fine-tipped applicators onto fine-pitch component traces.
• Flux Type: Formulated with an IPX3, no-clean flux system that provides high adhesion and excellent wettability.
• Packaging: Typically sold in 35g or 42g small plastic tubs.

Storage & Maintenance:

As detailed by product suppliers on Sharvi Electronics, solder paste requires specific care to prevent drying out:

• Shelf Life: Unopened and properly sealed, it lasts up to 6 months.
• Refrigeration: Once opened, it should be tightly sealed, kept in a plastic zipper bag, and stored in a refrigerator when not in use to maintain its viscous texture and shelf life. Always allow it to return to room temperature before application.