In this tutorial, we are going to learn about Top 10 Interview Questions & Answer for PCB Design Engineer.
1. What is PCB & PCB stands for?
Answer: – PCB stands for printed circuit board or PC board. It is a non-conductive material with conductive lines printed. All types components are assembled on the board and the traces connect the components together to form a working circuit or assembly.
2. How many types of PCB are used?
Answer: – Three ways are used for the construction of PCB called single sided, double sided and multilayered. Used components are connected electrically with the PCB board using two different method named as through hole technology and surface mount technology.
3. What is the composition of PCB Material?
Answer: – PCB generally consists of four layers, which are heat laminated together into single layers. Generally the different types of PCB materials used in PCB from top to bottom, includes Silkscreen, Solder-mask, copper and Substrate.
4. Where are PCB boards used?
Answer: – The most common PCB boards used by industry.
* Medical Devices.
* Consumer Electronics.
* Automotive Components.
* Aerospace Components.
* Maritime Applications.
* Safety and Security Equipment.
5. What do you mean by multi-layer PCB?
Answer: – Multi-layer PCB is a circuit board that has more than two layers. All multilayer PCBs should be at least three layers of conductive material which are buried in the center of the material.
6. What is Silkscreen in PCB?
Answer: – The Silkscreen is a layer of ink trace used to identify the PCB components, marks, logos, symbols, and so on.
7. What is Solder mask in PCB?
Answer: – It is a protective layer of liquid photo imageable lacquer applied on the top and bottom side of a Printed Circuit Board. The function of the copper from oxidation & creating shorts during soldering (bridges).
8. What is need for a PCB?
Answer: – Designs on bread boards to have neat placement of components without jumpers or wires a PCB is designed. It’s also helps in providing physical stability and overall circuit is more reliable.
9. Flow of complete PCB DESIGN?
* Library creation
* Board outline and mechanicals
* Importing net list
* Design Rule settings
* Component Placement
* Spilt plans
* Silkscreen and Assembly settings
* Gerber Settings
10. How to create Footprint?
Answer: – Footprint flow:-
* Pad stack creation
* Pin placement
* Assembly outline
* Silkscreen outline
* Place bound top (mention height)
* DFA bound top
* No probe top
* Silk and Assembly reference designator