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TO 92

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=3513
Printed Date: 08 Aug 2025 at 11:11am


Topic: TO 92
Posted By: RonieRC
Subject: TO 92
Date Posted: 08 Aug 2025 at 2:34am
How does the footprint Expert calculate the location of the pads/holes in TO92? Specially the Y location. Pitch is for the X location.


Replies:
Posted By: Tom H
Date Posted: 08 Aug 2025 at 7:50am
We've been using the same pattern since the 1980s. 

Pin 1 & 3 are on a 2.54 mm (0.100") grid in the x axis. 

The group of pins is centered in the component body to have equal distance from Pin 1 to the body and Pin 2 to the body and Pin 3 to the Body in the 'Y' axis. 

However, you can place the pins 'In Line' with a pin pitch of whatever you want. 

Either way, you're bending leads (lead forming) to fit in the holes. 



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