PCBs and embedded capacitors in one 3D-print job

September 12, 2019 //By Julien Happich
embedded capacitors
Additive electronics provider Nano Dimension has developed 3D printed capacitors with its DragonFly additive manufacturing system. The capacitors are embedded in the body of the additively manufactured printed circuit boards (PCBs), saving space and eliminating the need for assembly.

Nano Dimension’s extensive testing with capacitors of different 3D dimensions have shown consistent results with statistically validated data. The repeatability results show less than 1% variance. The technology uses the same dielectric and metal traces as in the additively manufactured PCB yielding capacitors with a capacitance range from 0.1nF to 3.2nF. The successful results are based on over 260 tests with 30 different additively manufactured capacitors dimensions.

By integrating capacitors using additive manufacturing, electronics designers and manufacturers can avoid what is often a time consuming, multi-step assembly process, as the DragonFly prints the entire capacitor and PCB in one print job. This allows companies to reduce the fabrication time and overcome many of the challenges imposed by traditional production techniques.

Additively manufacturing capacitors within the inner layers of circuits can also free space to meet the ever-increasing trend towards miniaturization and flatness of electronic devices for consumer, industrial and military applications. With extra space, designers may pack more functionality on the circuit board and shrink component size - all without compromising reliability.

Capacitors of this kind are primarily used to filter electrical noise and ripple voltage for a wide range of applications, including RF transmission lines, audio processing, radio reception and power circuit conditioning.

Nano Dimension - www.nano-di.com

 

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