PCB Design Training Fees

Your need

If you are in the final year of BE, B Tech. ME, M.Tech Engineering then you are just now getting ready to your Projects somewhere in research lab or industry.

Your plan

Identify your areas of interest on the basis of your course studies, practical experience and mentor guidance. You can also explore few new areas of technology by looking at news from NASA, NRC, NSF, DST and also newspapers. Once idea is frozen out, then go for your plan and discuss with your menotor.

Plan your time and funds

It is unlikely that your research will be free of cost as it needs material and precious time of someone. Plan the required funds needed to buy the essential, travel, caual things like lunch and tea, documents, zeroxing charges, internet and phone bills. If there is fee for project training then discuss it clearly and plan it.

Experimental

These area of research are mainly experimental and you develop hardware, wrie software programs, test the developed hardware and collect experimental resealts, analyze the data, discuss with experts and come to some conclusions about your research.

Thesis / Desertations

You then prepare yur research thesis and present it publicly.

First, I’d like to thank you for taking a moment to read my blog entry. I hope I can provide some useful information here that will help you increase your Knowledge in PCB Design Career and solve some problem you maybe behaving with your Design.

Today we will Talk about Fiducials Markers and its Importance.

What is a Fiducial Mark/Marker?

Basically, Fiducials are nothing but SMD Pad (Copper Pad) with Its double dimension Solder Mask Opening area.

It's a round=shaped solder mask opening with round SMD Pad (Bare copper) in the centre, uses as a marker for a circuit pattern recognition.

The SMD Pad (Bare Copper) has a smaller diameter than the solder mask opening.

Fiducial Mark on the PCB

*****Size of fiducial markers****

The minimum recommended size for fiducials is 1.0 mm.

It is good practice to keep all fiducial marks the same size as some assembly equipment is less flexible in its ability to recognise different size marks on the same printed circuit board.

The Size of Fiducial Marker depends on assembly machines.

(SMT Pick & Place Machines).

-- Dimensions of 1 mm (40 mils) diameter of SMD Pad 

  (bare copper) with 2 mm (80 mils) solder mask opening diameter (the most Common used Fiducials.)

-- And 1.6 mm (63 mils) diameter of SMD Pad

  (bare copper) 3.2 mm (125 mils) solder mask opening diameter is excellent for almost all Assembly machines.

-- All assembly Machines accepts 40/80 and 63/125 (Mil) sized fiducials.

We can easily understand by this Pictures.

-- in a simple way, we can understand the concept to Design Fiducial Markers....

The Solder Mask Opening will always be Double of Bare Copper or SMD Pad. 

*******Types of Fiducials********

There are Two Types of Fiducial Markers:

1. Local Fiducial.

2. Global Fiducial.

*********Local Fiducial***********

Local fiducials Mark used for Fine Pitch Components or Footprints (QFPs and BGAs) to locate the positions on PCB Boards, which require precise placement.

A Local fiducial mark (or marks) used to locate the position of an individual land pattern or Footprint or component that may require more precise location, such as a 0.5mm pitch Components.

One or more local fiducial marks shall be used, when it is necessary to correct for transnational (X- and Y-position).

Single Local Fiducial for Fine Pitch Components.

Dual Local Fiducial for a Fine Pitch Component.

*******Global Fiducial***********

A Global fiducial Mark used for the WHOLE PCB to locate the positions Boards for SMT Pick Place Machine.

Global fiducials are used to locate the position of all features on an individual PCB, and they’re a must for a pick-and-place machine to situate a board to the CAD data programmed into the SMT machine.

Minimum Three or Maximum Four Global fiducial marks shall be used, when it is necessary to correct for transnational (X- and Y-position) for PC Boards.

*******Symbols for Fiducials******

Fiducial Markers Can be one of below-given Symbols.

   We all are in countinous learning phase in life.   Day to day we are learning new things,new language words,new faces,new gazets by all means of modes like reading books,newspapers,watching TV,movies,meeting different persons etc.

We learn more effectively if thats visual to us, someone guide us for 'how to do' in person. Like our parents teach us in childhood by doing theirself.

We are receiving knowledge through all activities whether its completely new one like river rafting or the usual one like brushing your teeth.

But i would like to make point ,the thing which we do personally will have more impact on us.As we would be experiencing the situation in real. If the things done in real situation ,as they said,it will stored in uncontious mind which is useful in  time constraint situation.

 Self learning is usefull ut we will not be sure if we are not correct path.So the trainer is indeed ,and if its personal then its icing on the cake. :)