Preformed solder is a kind of advanced welding material, which consists of a thin preformed tin sheet and a flux precoating on the surface. Due to the advantages of precise positioning, stable filler metal content, low welding cavity rate and less flux residue, it is especially suitable for welding occasions with large pads and high quality requirements. It is an effective method to reduce the cavity rate of welded parts by reflow welding with preformed solder instead of solder paste. Compared with solder paste, it uses a solid flux, so there is no large amount of volatiles caused by organic solvents, thereby preventing and reducing the formation of holes during welding.
APPLICATION CASE
The preformed solder is packaged in a roll and mounted using an automatic mounting process to provide you with an easy method. Due to the standardization of the predetermined amount of solder, the operation is simple and a lot of manpower is saved. Preformed pads usually produce a uniform weld point, simplifying the final inspection step of assembly. Preformed pads accurately increase the amount of solder, and preformed solder washers eliminate the need for secondary welding processes.
PRODUCT PARAMETER
| Product name | preformed solder sheet | Brand | Singway |
| Shape | Flake, block | Material | Various tin alloys can be customized |
| Melting Point | 217±2℃ | proportion | 7.5±0.1g/cm3 |
| thickness | customizable | width | customizable |
| Length | customizable | place of production | Dongguan, China |
| range of application | Suitable for filter connectors and electronic component assembly |
SPECIFICATION AND DIMENSION
| Product model | Product dimensions | Capacity |
| L | W | H | V |
| Milliment | Inch | Milliment | Inch | Milliment | Inch | Milliment | Inch |
| 0402 | 1.00 | 0.039 | 0.50
| 0.020 | 0.50
| 0.020 | 0.25 | 0.000015 |
| 0603 | 1.60 | 0.063 | 0.80 | 0.031 | 0.80 | 0.031 | 1.02 | 0.000061 |
| 0805 | 2.03 | 0.079 | 1.27 | 0.050 | 0.76 | 0.028 | 1.96 | 0.000111 |
| 1206 | 3.56 | 0.14 | 1.52 | 0.060 | 0.77 | 0.030
| 4.17 | 0.000254 |
PRODUCT FEATURES
Creep resistance
low-residue
Good thermal conductivity
Excellent ductility
Strong stability
Strong antioxidant capacity
Bright and smooth surface
high reliability
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