Lead Free Solder Paste No Clean Flux Cored Tin Bismuth Silver Alloy SMT Printer Welding Soldering Cream

Speficication:

Services:

We have professional sales team to responding to client's inquiry promptly.

We provide technology support and thoughtful pre-sale, in-sale and after-sale service to our customers.

FAQ:

Q: What are the differences between tin lead solder and lead-free solder?

A: The specific differences as follows:

1. By Color:
The surface with lead solder appears bright white.
It is light yellow for lead-free solder.

2. By Alloy Composition :
The tin lead solder contain two main metal elements: tin and lead, such as Sn63Pb37, Sn50Pb50 etc.
The lead-free solder generally contains tin, silver or copper metal elements. It hasn't lead basically (EU ROHS standard is less than 1000 PPM in lead content, ours are 200PPM around.).

3. By Application:
The tin lead solder is used for welding of lead products. Its tools and components are all with lead.
The lead-free solder ask for the tools and components all must be lead-free.

4. By Hand Rubbing:
If there is lead, there will be black marks on the hand,
If no lead, there will be pale yellow marks, because the lead-free solder generally contains copper.

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Q: Which parts are used for soldering?

A: The solder wires and bars are widely used in metal equipment, electronic components, communication equipment, electrical appliances, electronic instruments, instrumentation etc.. The solder paste is mostly used in SMT, SMD, PCB, LED electronic components welding.

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Q: What are the types of ordinary solder wires?

A: Solid solder wire, flux-cored solder wire, No-clean solder wire and water-soluble solder wire.

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Q: Why is flux-cored added to solder wire?

A: The tin does not have welding function itself. The rosin acts as a soldering aid adding in the solder wire. The rosin additive removes oxides on the surface of solder alloy and creates good conditions for wetting and spreading. The rosin additive can protect the surface of solder alloy and prevent oxidation after welding.

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Q: Why does the tin spatter when soldering wire?

A: Because there are too many rosin in solder wires. we suggest to reduce the flux to 2% around, then this situation will be improved. On the other hand, the unstable soldering iron temperature can also cause this phenomenon. Please choose the constant temperature soldering iron table, and make sure the soldering iron head temperature is balanced.

YUSH Electronic Technology Co.,Ltd was founded in 2005,is located in the world manufacturing city Jiangsu,Guprofessional pcb separator/pcb depanelizer electronic equipment machinery. The company has advanced production and processing equipment and an experienced development and manufacture team,half of them have over 10 years experience in electronic equipment industry.

Begin with 2004 the company leader invested to develop and manufacture the PCB separator and PCB depaneling machine.From then on we pay more attention to product quality,safe to use and product innovation,so far we have produced many high quality, stable performance, high cost-effective products. Improve production yields, increase productivity, and thus enhance the market competitiveness of our customers. Until now we have design different separating PCB types of PCB separator and PCB depaneling machine with manual,motor-driven,pneumatic-driven,mold punching,milling cutter router.Due to the good quality and reasonable price our customers are all over the world.Up to now YuSH have became one of the biggest PCB separator production base in China.