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Add a SOT89 Component Family Calculator

Printed From: PCB Libraries Forum
Category: PCB Footprint Expert
Forum Name: Product Suggestions
Forum Description: request new features
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3583
Printed Date: 25 Nov 2025 at 4:09pm


Topic: Add a SOT89 Component Family Calculator
Posted By: m.elsayed
Subject: Add a SOT89 Component Family Calculator
Date Posted: 25 Nov 2025 at 12:31pm
Since SOT89 is a popular component family. 

We need to add this package in the surface mount Calculator instead of creating it in FP Designer.

This is an urgent request.




Replies:
Posted By: Tom H
Date Posted: 25 Nov 2025 at 12:58pm
We've been in the PCB library business since 1982. SOT89 was popular back then, but component manufacturers do not have standard package or terminal leads. 

There are too many variables in the SOT89 component family. 

It's impossible to cover all the various versions of the SOT89 package. 

Pin 2 with Chamfered Leads on two ends:


 

SOT89 with 5 leads:


SOT89-5 with unique Pin 2:
 
 SOT89 with chamfered Pin 2 on one end and rectangle on the other end:


 
There are many other versions on the SOT89 package, but I'm not going to post all of them. You get the general idea on this non-standard package. 
 


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