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Calculation D2PAK

Printed From: PCB Libraries Forum
Category: Libraries
Forum Name: Footprints / Land Patterns
Forum Description: [General or a CAD specific issues / discussions]
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=1237
Printed Date: 07 Mar 2026 at 12:41pm


Topic: Calculation D2PAK
Posted By: ThijsVerdonschot
Subject: Calculation D2PAK
Date Posted: 17 Jan 2014 at 5:55am
I have to calculate a D2PAK footprint from ST Electronics.

In the library expert I only see the option to calculate a TO (DPAK).

Is it the best way to use the maximum with for the e1 value since the D2PAK has a kind of a T-shape?


Replies:
Posted By: Tom H
Date Posted: 17 Jan 2014 at 7:48am

I bet the component mfr. recommended pattern is not T-Shape, rather it's a full pad used for thermal relief.

You can use the TO (DPAK) component family to create a D2PAK footprint.

You can also select the "Footprint" tab and enter the mfr. recommended pattern (after you enter the component dimensions to calculate the IPC pattern).




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Posted By: ThijsVerdonschot
Date Posted: 17 Jan 2014 at 8:53am
Hi Tom,
 
It is an thermal relief pad and the manufacturur recommended shape is 2mm larget then the lagest size.
I will use the TO (DPAK) to calculate.
 
Thank you for your quick reply.
 


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