Embedded Resistors / Capacitors Technology

Embedded Resistors / Capacitors

Embedded resistors/capacitors

Embedded components like resistors/capacitors are fabricate within the layers of the printed circuits boards, that improved electrical performance and allow more surface.

Advantages of embedded resistors/capacitors components:

  • Embedded components can reduce EMI,cross talk and noise from other components.
  • Package replacement-Miniaturization.
  • Protected against external environment impact.
  • less solder joints.
Embedded Resistors / Capacitors Diagram

Design- embedded resistors

The design of resistor shape is determined on final resistor required value and embedded resistance material value.

The basic equation for calculating resistance is:

R = Rs(L/W)

     R = resistance in ohms
     Rs = sheet resistance in ohms/square
     L = length of resistor
     W = width of resistor

For Example:

  • Sheet Resistivity (Rs)= 50 ohms/square
  • resistor Length= 20 mil
  • resistor Width= 10mil
  • R=50 ohms/square X(20mil/10mil) = R=100 ohms
The final resistance tolerance depends on the PCB manufacturer’s etching process, it’s recommended to adjust the resistor length and used fixed resistor width.

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