Solder paste: Classification, use, storage.

Solder paste is a creamy mixture of Solder Powder metal particles (alloy) mixed with soldering paste grease in a certain ratio, in which Solder powder accounts for 80~90% of the product mass.

Compared to solder bars or solder wire, the biggest advantage of solder paste is that you do not need to melt it before using it. This makes the soldering process simpler and saves more time.

Classification of solder paste:

High temperature solder paste (Melting point: 216~227 ℃): SnAgCu

Medium temperature solder paste (Melting point: 151~179 ℃): SnBiAg1.0/ SnBiAg0.3

Medium low temperature solder paste (Melting point:138~141 ℃): SnBiAg0.4

Low temperature solder paste (Melting point: 138 ℃) : Sn48%Bi58%

Instructions for proper use and storage of solder paste:

Do not use this product for other purposes differently from soldering.

2) Recommended storing condition and quality guarantee period are 6 months(keep:1~ 10℃)

3) When its temperature is restored to room temperature, avoid too rapid heating. Keep it at room temperature and wait(＞2hr). Do not open sealing when it is cold。 When using, stir the solder paste for about 2-3 minutes to return the solder paste to its original state.