SMT technological line for PCB assembling

SMT (surface mount technology) is a procedure in which electronic components are soldered directly to the surface of a printed circuit board by soldering. The printed circuit board can be multi-layered, four layers of copper are commonly used, and they are mounted on the outside, i.e. on the upper and lower layer. Components designed for surface mounting are referred to as SMD (surface mount device). At present, almost every mass-produced electronic device has printed circuit boards fitted with this technology.

Printed Circuit Board (PCB) mounting by SMT (Surface Mount Technology)

The SMT line that CANOR company possesses consists of the following set of devices:

• Top screen printing equipment DEK Horizon 03i for stencil application of tin paste as well as SMT adhesives
• Assembleon (Yamaha) Topaz XII and MG 1 Pick and Place machines
• Reflow oven Hotflow 7 CR for remelting tin pastes and curing SMT adhesives using nitrogen, which prevents excessive oxidation during the tinning process.

The entire SMT technological process, from the application of pastes and adhesives to remelting, takes place fully automatically without the touch of hands. The movement of printed circuit boards is ensured by conveyors and magazines of top Japanese quality from the companies Nutek and Asys.

The capacity of the SMT line is up to about 13,000 components per hour, depending on the components used. The Canor SMT line is capable of mounting components from size 0402.

Printed Circuit Board (PCB) mounting by THT (Through Hole Technology)

THT components (components with wire terminals) are mounted on manual mounting workplaces and soldered on the ERSA EWS 500 F XL automatic soldering device or manual soldering stations.

Testing

We use the following testing systems during production:

• AOI system (Automatic Optical Inspection) - automatic optical inspection
• ESD testovanie výrobkov (elektrostatický výboj) - elektrostatický výboj

After soldering, all electronic modules and printed circuit boards are tested using an automatic optical tester - AOI (Automatic Optical Inspection) system Marantz 22 X DL for placement of components and soldering parameters.