Integrated Passive Devices (IPD's) or Integrated Passive Components (IPC's) or Embedded Passive Components are electronic components where resistors (R), capacitors (C), inductors (L)/coils/chokes, microstriplines, impedance matching elements, baluns or any combinations of them are integrated in the same package or on the same substrate. Sometimes integrated passives can also be called as embedded passives, and still the difference between integrated and embedded passives is technically unclear. In both cases passives are realised in between dielectric layers or on the same substrate.