What are the characteristics of led lead-free solder paste? JJY tells you

ledWhat are the characteristics of lead-free solder paste? There are many types of solder pastes on the market now, and the corresponding product types and uses also vary. Many people do not take this type seriously. They can be classified by temperature, by composition, and by whether they are environmentally friendly. By temperature, they can be divided into high-temperature solder paste, medium-temperature solder paste, and low-temperature solder paste. By composition, they can be classified as: tin-silver-copper, tin-silver-bismuth, tin-bismuth, tin-lead, and tin-lead-silver solder paste. By whether they are environmentally friendly or not:Lead-free solder pasteLeaded solder paste and halogen-free solder paste. Now, let's have JJY solder Paste Manufacturer explain them to you:

It is often used in factoriesLEDMost of the special lead-free solder pastes are gray or grayish-white pastes, generally500GSealed bottles are available, and there are also specially customized ones such as syringe packaging or1KGPackaging, usually used3#Powder diameter(25-45Micron)The alloy powder and 8% to 12% flux paste are in a vacuum(Nitrogen protection)The so-called lead-free environment is achieved through uniform stirring. It does not mean that lead in the solder paste is absolutely and completely prohibited, but rather that the lead content must be reduced to below1000ppm(<0.1%)The level also meansLEDElectronic manufacturing must comply with lead-free assembly process requirements. "Electronic lead-free" is also often used to generally refer to six toxic and harmful materials, including lead The content of the material must be controlled at1000ppmWithin the level.

Product Features:

1, It has good wettability, is not easy to dry, has a long printing service life, stable effect, and more effectively ensures the quality of pasting

2, Easy to operate, with good printing rolling and tin dropping properties. Only a very low squeegee pressure is required. The printing performance is stable. During continuous printing, the viscosity change is extremely small, there is no collapse, and the surface mount components will not shift. The requirement is as low as

3The pitch pads can also achieve exquisite printing

4It has higher welding performance and can be used for nickel-plated platesPCBVarious manufacturing processes such as plate, hot air, and infrared reflow welding

5, There is very little residue after welding, it has a large insulation resistance and will not corrodePCBThe board surface is clean and fully meets the requirement of being washable

6, It can be used in the through-hole roller coating process

7It incorporates the latest demolding technology, reducing the number of times the net is wiped during operation and improving work efficiency

8, The weld points are full, uniform and have climbing characteristics

9, The surface insulation impedance is high, and there are no internal circuit testing issues

10, The alloy composition contains42%Bismuth, being brittle is a property of metallic bismuth, so its fatigue strength is low Defects of low-temperature lead-free solder paste.

Instructions for Use:

Sn42Bi58The solder paste should be in5-10℃The storage period under the environment is6Months, not less than0℃Store under such conditions and thaw before use2-4It should be left to room temperature for more than an hour before opening to prevent the formation of tin beads due to moisture. Then stir well before use.

LEDFor special useLead-free solder pasteIt has excellent stickiness. Generally speaking, it's quite pleasantLEDThe preference of the industry and the choice of types still depend on some of your needs. If you have any further questions, you can consult Shenzhen JJY. This company is a producer of electronic raw materials and conducts mutually beneficial cooperation. At the same time, it also produces solder wire, solder bar, solder paste and flux paste for other enterprises. With a rich variety of successful cases in the research and development of chemical raw materials, our overall strength has created a sales market that is of high quality and honest and trustworthy.