Footprint for TO-220 Vertical

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   I try to create the footprint forhttps://www.onsemi.com/pub/Collateral/TIP50-D.pdf
The datasheet doesn't content any recommendation.
If i create it in calculator than the pads cover each other
partially. I want to redraw the pad dimension manually.
Is there any general recommendations to create the elongate pad? 

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Batiskaff Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 30 Apr 2018 Status: Offline Points: 65	Post Options Post Reply Quote Batiskaff Report Post Thanks(0) Quote Reply Topic: Footprint for TO-220 Vertical Posted: 27 Feb 2020 at 10:55pm
	I try to create the footprint for https://www.onsemi.com/pub/Collateral/TIP50-D.pdf The datasheet doesn't content any recommendation. If i create it in calculator than the pads cover each other partially. I want to redraw the pad dimension manually. Is there any general recommendations to create the elongate pad?



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5780	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 28 Feb 2020 at 8:23am
	The Pin Pitch is 2.54 mm (100 mil). The pads should not overlap.
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Batiskaff Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 30 Apr 2018 Status: Offline Points: 65	Post Options Post Reply Quote Batiskaff Report Post Thanks(0) Quote Reply Posted: 28 Feb 2020 at 9:18am
	I am sorry, the right datasheet is here: http://ww1.microchip.com/downloads/en/DeviceDoc/21374D.pdf see page 11.

Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5780	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 28 Feb 2020 at 9:32am
	Then you make the "D" and "D1" dimensions different. You must bend the leads. You decide the dimension value that you want to bend 2 leads.
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Batiskaff Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 30 Apr 2018 Status: Offline Points: 65	Post Options Post Reply Quote Batiskaff Report Post Thanks(0) Quote Reply Posted: 28 Feb 2020 at 11:33am
	As i understand, constrict + stretch the pads is undesirable. For example, footprint on page 15: http://www.ti.com/lit/gpn/UC385?keyMatch=kc0005a&tisearch=Search-EN-Keyword

Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5780	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 28 Feb 2020 at 11:55am
	Do you want the oblong pad version? I'll build it for you. Simple 5-minute task in FP Designer.
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