PCB Design Engineer Interview Questions and Answers for Freshers

Standard drill bit sizes range from 0.8mm to 25mm, with common sizes including 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm.

• Standard drill bit sizes range from 0.8mm to 25mm

• Common sizes include 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm

• Sizes are available in both metric and imperial measurements

Direct PCB layout involves placing components and routing traces directly on the board without using a schematic.

• Start by placing the components on the board in a logical and organized manner.

• Route the traces between the components, taking care to avoid crossing over each other.

• Use ground planes and power planes to improve signal integrity and reduce noise.

• Consider the size and shape of the board, as well as any mechanical constraints.

• Perform design rule checks to ensure the ...read more

Microstrip and stripline are types of transmission lines used in PCB design to carry high-frequency signals.

• Microstrip is a type of transmission line where the signal conductor is on the top layer of the PCB and separated from the ground plane by a dielectric material.

• Stripline is a type of transmission line where the signal conductor is sandwiched between two ground planes on inner layers of the PCB.

• Microstrip is easier to fabricate and offers flexibility in design, while st...read more