What is the primary function of the substrate in a PCB?
The substrate provides mechanical support and insulation for the conductive layers of the PCB.
Which material is commonly used as a substrate in rigid PCBs?
FR-4 is the most commonly used substrate material for rigid printed circuit boards.
What is the purpose of solder mask on a PCB?
Solder mask protects the copper circuitry and prevents solder bridges during assembly.
Which manufacturing process is used to create PCB copper traces?
Etching removes unwanted copper, leaving behind the designed copper traces.
What is the main benefit of using a via in PCB design?
Vias connect different layers electrically, enabling multi-layer circuit designs.
What is the role of copper thickness in PCB manufacturing?
Copper thickness determines the current-carrying capacity and electrical resistance of PCB traces.
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Which manufacturing method is used to drill holes for component leads and vias?
Drilling creates precise holes for component mounting and electrical connections.
Why is thermal management important in PCB manufacturing?
Proper thermal management prevents overheating that can damage components and affect reliability.
What is the common finish applied to exposed copper pads to prevent oxidation?
Finishes like HASL or ENIG protect copper pads from oxidation and improve solderability.