What Are SAC Alloys?

SAC Alloys are used for the purpose of soldering and come in different forms. SAC Alloys can come in the form of Solder Wire, Pellets and Ingots as well as having different levels of silver and copper which then alters the tin. Here at DKL we supply both SAC387 and SAC305 Alloys.

SAC305 Alloys are lead-free and most commonly used for electronic solder. The proprietary composition of SAC305 Alloys is 96.5% tin, 3% silver, and 0.5% copper. This composition offers super fluidity compared to other alloys resulting in excellent flow. These alloys replaced tin-lead solders and are now the leading choice for electronic applications. SAC305 Alloys have been proven to perform well in the following applications:

• Wave Soldering = Wave soldering is a bulk soldering process used in the process of manufacturing printed circuit boards. The circuit board is brought over a pan of molten solder, where a pump produces the upwelling of solder that looks like a standing wave.
• Surface Mount = This is the process of creating circuits using Surface Mount Technology components that are mounted directly onto the surface of the printed circuit boards.
• Hand Soldering = This is the easiest and most common method of soldering in electronic engineering. The energy for heating the parts to be joined and melting the solder are transmitted by applying pressure with the pre-tinned soldering tip of a soldering iron. This technique can also be referred to as “Soft Soldering”.

Sac Alloys are compatible with most electronic grade fluxes and if stored correctly, will have an unlimited shelf life. For more information or to make an enquiry about our SAC Alloys or any of our other products which we supply, contact us on 01506 847710, and a member of our team will be more than happy to help.