To achieve greater packing density for surface mounted components, it may be necessary to embed certain passive items like resistors and capacitors within a PCB plane. There are several products today that can help designers achieve those goals.
About EMBEDDED PASSIVES
Embedded passives within PCB boards are not a new concept and have been around for over a decade. The traction within the marketplace is slowly increasing due to reliability demands placed on solder joints.
To achieve superior reliability and eliminate the solder joint entirely, Pyralux® APR and Interra® HKO4 products can embedded resistors and capacitors, respectively, into a pair of planes within PCB. Using existing PCB manufacturing steps, most fabricators can handle either material set.
Embedded resistance FCCL for heaters and embedded resistance.
Embedded capacitance material for rigid PCB applications with energy demanding HDI designs.