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 Post subject: SMD Components Data Required
PostPosted: 10 May 2017, 01:33 
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Joined: 06 May 2017, 02:27
Posts: 5
Hi Diptrace Community & Others;
Before starting my question I would like to say that Diptrace has been a lot of help to me in my PCB career as it was my first software for Pcb designing. it's lot easy and as a beginner its much flexible to use.Thanks Diptrace
Now my question is,I'm going to start a SMD design and since I don't have any professional experience I'm unable to understand what components/sizes/footprints to use. (Components i want to use are 2N2222,LED,1K,10K,220E,0.1uF,100uF,ATMega328,MOC3021,PC817,4N35,TRIAC,1N4007,Quartz16MHz,Bridge rectifier) :D
So please someone help me through this obstacle. (it would be much better if I get the sizes of footprints for all the components)
Thanks in advance


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 Post subject: Re: SMD Components Data Required
PostPosted: 10 May 2017, 06:19 
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Joined: 20 Jun 2015, 14:39
Posts: 940
Sizes are driven by component function/voltage/current/power requirements and their material makeup. For example, if you have calculated that part of your circuit needs a 0.125 watt film resistor then typically you would be looking at an imperial SMD size of 0805 (metric: 2012). The numbers in the imperial size code 0805 indicate dimensions of 0.08" x 0.05" (metric 2012: 2.0 mm x 1.2 mm) There may be exceptions when dealing with higher voltages or using components made from different materials for better electrical performance. Here is a web page that will get you pointed in the right direction that explains standard SMD resistor sizes and packages - http://www.resistorguide.com/resistor-sizes-and-packages.

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Tom


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 Post subject: Re: SMD Components Data Required
PostPosted: 10 May 2017, 08:08 
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Joined: 06 May 2017, 02:27
Posts: 5
Are there any different types of standards for components?
What are the basic component sizes used(like you said 0805) any other than this irrespective of voltage,current concerns?
Thanks


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 Post subject: Re: SMD Components Data Required
PostPosted: 10 May 2017, 08:43 
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Joined: 20 Jun 2015, 14:39
Posts: 940
Some general SMD information can be found on this wiki page - https://en.wikipedia.org/wiki/Surface-mount_technology and, although not SMD-centric, here is a good video explaining various capacitor types, their physical characteristics and applications - https://www.youtube.com/watch?v=J0TjW_0xTJU.

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Tom


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 Post subject: Re: SMD Components Data Required
PostPosted: 10 May 2017, 08:45 
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Joined: 06 May 2017, 02:27
Posts: 5
ThankYou,I'll go through it once :)


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 Post subject: Re: SMD Components Data Required
PostPosted: 10 May 2017, 12:11 
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Joined: 18 Dec 2015, 15:35
Posts: 161
ishtiaqshaheer wrote:
ThankYou,I'll go through it once :)

Keep a link for a reference
You might take a look at Tom Hausherr's Blog, the starting point https://goo.gl/euhoui for the 19 part series. Take the time to read all the parts, even being seven years old it has tons of valuable information. His blog is one of the reasons I moved to DipTrace, DipTrace has a working metric layout system...


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