TopLine was founded in 1989 as the original "one-stop-shop" for daisy chain components. Over the past decades, TopLine has helped thousands of customers to define and refine their SMD assembly processes in 45 countries.

Today, TopLine manufactures BGA and CCGA Column Grid Array, solder columns and a wide range of daisy chain semiconductor packages, and test vehicle PC boards. TopLine assists thousands of customers define and refine their SMT and microelectronics assembly processes. Our fully-illustrated 160 page catalog includes over 1000 different dummy packages and practice kits. Expert application engineers are ready to offer solutions to your complex requirements.

Dummy Components are a low cost way to define and refine your SMT assembly processes. TopLine offers same day shipping on most items.

Our customers are constantly discovering new ways to use dummy components. Typical applications include machine evaluation, acceptance testing, solder training, temperature profiling, re-certification, prototype design, practice and demonstrations.

Whether you require special packaging or a custom PC Board designed, TopLine does all these efficiently and routinely. Gerber files to make solder-paste stencil are free.

We offer many training guides such as the SMD Nomenclature Book and Quick Study Dummy Components, and free component outline drawings and PC Board footprints from our Document Center.  And be sure to download our free library of 450 TopArt Clip Art illustrations of electronic components.