Impedance Control PCB Manufacturer

 What is Controlled Impedance PCB ?

Impedance Control PCB demand a higher level of precision for a PCB manufacturer. Unless you have carefully designed the trace and its environment, impedance is typically “uncontrolled”, meaning that impedance will vary in value from point to point along the trace.

At high frequencies, PCB traces do not behave like simple connections, controlled impedance helps us ensure that signals are not degraded as the route around a PCB.

Essentially, controlled impedance is the matching of substrate material properties with trace dimensions and locations to ensure the impedance of a trace’s signal is within a certain percentage of a specific value. Controlled impedance boards provide repeatable high-frequency performance.


MOKOPCB has many years of experience producing PCB and low-mid volume production runs with short lead times for many different types of applications.

In order for a PCB manufacturer to properly execute an order, it needs a set of exact sizes and coordinates, trace widths, hole patterns and, of course, tolerances. PCB Impedance is the sum of reactance, or the AC component, and resistance, or the DC component of an electric circuit. PCB manufacturers are expected to conform to the PCB trace impedance values and tolerances specified by the designer in order for the board to behave as desired.

MOKOPCB’s Stack-up Capabilities include:

  • Free Stack-up
  • Free Impedance
  • Hybrid Build
  • RF PCB

MOKOPCB tries to keep common materials in its in-house inventory at all times. The common materials include:

  • Higher copper weights: 2 oz, 3 oz; heavier weights (With Lead Time)
  • Odd copper weights: H/1 oz, H/2 oz, 1/2 oz
  • Foil: 1/4 oz, H oz, 1 oz, 2 oz, 3 oz

View Impedance Control PCB Samples BY MOKO Manufacture:

Quick Turn Impedance Control PCB

6 layers impedance control PCB

Impedance Control PCB

Applications of Impedance Control PCBs

Controlled Impedance should be considered for PCBs used in fast digital applications such as:

– Telecommunications

– Computing 100MHz and above

– High Quality Analog Video

– Signal Processing

– RF Communication

PCB with controlled impedance requires a meticulous level of accuracy in order to function correctly. PCB designers specify trace impedance and tolerance required and work with the PCB manufacturer to confirm that specifications are met.

At MOKOPCB, we supply rigid, and rigid-flexible printed circuit boards from the top PCB manufacturers to ensure that our customers receive only the highest-quality printed circuit boards that meet all impedance specifications.

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