Footprint for TO-220 Vertical
Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Questions & Answers
Forum Description: issues and technical support
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=2609
Printed Date: 25 Nov 2024 at 4:51pm
Topic: Footprint for TO-220 Vertical
Posted By: Batiskaff
Subject: Footprint for TO-220 Vertical
Date Posted: 27 Feb 2020 at 10:55pm
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I try to create the footprint for https://www.onsemi.com/pub/Collateral/TIP50-D.pdf" rel="nofollow - 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?
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Replies:
Posted By: Tom H
Date Posted: 28 Feb 2020 at 8:23am
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The Pin Pitch is 2.54 mm (100 mil). The pads should not overlap.  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: Batiskaff
Date Posted: 28 Feb 2020 at 9:18am
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I am sorry, the right datasheet is here: http://ww1.microchip.com/downloads/en/DeviceDoc/21374D.pdf" rel="nofollow - http://ww1.microchip.com/downloads/en/DeviceDoc/21374D.pdf see page 11.
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Posted By: Tom H
Date Posted: 28 Feb 2020 at 9:32am
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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. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: Batiskaff
Date Posted: 28 Feb 2020 at 11:33am
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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" rel="nofollow - http://www.ti.com/lit/gpn/UC385?keyMatch=kc0005a&tisearch=Search-EN-Keyword |
Posted By: Tom H
Date Posted: 28 Feb 2020 at 11:55am
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Do you want the oblong pad version? I'll build it for you. Simple 5-minute task in FP Designer. ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |