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DFN 4 Pins - Side (Not Bottom Only)

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davidhadley View Drop Down
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    Posted: 23 Mar 2021 at 2:08am
Hi All, 

I'm trying to create a 4 pin DFN (Oscillator) with side terminals so I need a toe but all settings seem to be for bottom only (periphery). 

Is it possible to set to Flat No-Lead Side (as seems an available option in the terminal preferences). 
 
Many thanks Smile

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Tom H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 23 Mar 2021 at 8:52am
Are you sure it's a 4-pin DFN? 

I would use the mfr. pattern and build it in FP Designer. 

All unique patterns are created there. 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote davidhadley Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2021 at 12:23am
https://www.digikey.co.uk/products/en?keywords=SIT8008BI-12-33E-36.000000E

I cant use manufacturers recommendation as I've been told by production pads are too large and cause issues.

Wondering why when you select 4-pin DFN it defaults to No Lead Side but then when you put calculations in it changes to No Lead Bottom Only (Periphery)?

I have manually changed calculations to get what I want (0.2 toe, 0 side, 0 heel) but interested to know if there's a way of selecting No Lead Side for these types.

Many thanks,
David
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom H Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2021 at 8:47am
DFN's and LGA's are in the same component family. 

The Terminal Leads are 100% under the package. 

Therefore a Periphery solder joint goal is the only option. 

However, the part that you are referring to is not a DFN package. It's a Side Concave Oscillator


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