The introduction of multipurpose PCB enclosures has made motor more secure and safe. The enclosures are available in various sizes. The most popular moulded enclosures keeps the motor secure and helps avoid any direct touch with casing. The enclosure can include fully covered vibration motor that is placed in plastic moulds. The other way is to pin it down with the PCB, which is known as PCB Enclosures. The later method is more secure and safe. With such enclosure, the vibrations that the motor produce are transmitted directly to the casing. Such casing becomes useful in case of handheld applications or even vibrating alert. This is because the strength of the vibration is not reduced because of transmission between the motor to the PCB, and from PCB to the enclosure.
Initially, we had access to the conventional through-hole type of circuitry that came with leads which were directly connected through pre-manufactured holes in the PCB. Then we were introduced BGA, which stands for Ball Grid Arrays. BGA Assembly circuit boards use smaller circular balls that are soldered to offer flowing electricity through different parts of the circuit. This offered benefits to the PCB assembly. Most importantly, it offers higher density to the circuits. Initially it was difficult to solder the through-hole circuits accurately, as they were thickly populated. The chances of crossover or at times short circuits increased. With BGA assembly circuit boards, many connections were possible, in spite of the fact that they require machined soldering to gain accuracy. The other benefit of BGA circuits is that they allow easy transmission of heat from integrated circuits that reduce the problem of overheating.