PCB Libraries Forum : Naming Convention Example SOT23 https://www.PCBLibraries.com/forum/ Thu, 09 Apr 2026 21:17:10 +0000 Wed, 07 Aug 2024 08:15:11 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3408 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Naming Convention Example SOT23 : Ok ok, the difference is that...]]> https://www.PCBLibraries.com/forum/naming-convention-example-sot23_topic3408_post13600.html#13600 Author: vdamico7
Subject: 3408
Posted: 07 Aug 2024 at 8:15am

Ok ok, the difference is that you are seeing the measures of SOT-SC70 and I'm seeing the measures of SOT-23 in the datasheet. 

I saw that the PN details, in reality, the REF3318AIDCKT is a SOT-SC70.

At first, I saw the SOT-23 indications directly on the datasheet, because the physical description in the SW of the part number indicates an SOT-23.

Thanks!!Tongue


]]> Wed, 07 Aug 2024 08:15:11 +0000 https://www.PCBLibraries.com/forum/naming-convention-example-sot23_topic3408_post13600.html#13600 <![CDATA[Naming Convention Example SOT23 : The L dimensions are Nominal.Here...]]> https://www.PCBLibraries.com/forum/naming-convention-example-sot23_topic3408_post13599.html#13599 Author: Tom H
Subject: 3408
Posted: 07 Aug 2024 at 7:15am

The L dimensions are Nominal. 



Here is the datasheet for the TI Case Code DCK0003A 



]]> Wed, 07 Aug 2024 07:15:08 +0000 https://www.PCBLibraries.com/forum/naming-convention-example-sot23_topic3408_post13599.html#13599 <![CDATA[Naming Convention Example SOT23 : In the document:Guidelines taken...]]> https://www.PCBLibraries.com/forum/naming-convention-example-sot23_topic3408_post13598.html#13598 Author: vdamico7
Subject: 3408
Posted: 07 Aug 2024 at 1:50am

In the document:
Guidelines taken from IPC-7351 Footprint Expert Land Pattern Naming Convention;

the SOT23 naming convention is this: 

SOT23 .........SOT23 - Pin Qty. + P Pitch _ Lead Span X Body Height + L Lead Length

but in the SW PCB expert (I'm using the demo version) the example of a SOT23 component (part number REF3318AIDCKT) is the following: 

SOT23-3P65_210X110L36X22

I don't understand the meaning of the 4 last digits (36X22)

I imagine that 36 takes reference to L Lead Length and 22 to Lead Width, but in the datasheet these two values are different: 


Lead Length range is: 0.20 - 0.60
Lead Width range is: 0.30 - 0.50

so I don't understand why in the SW the final digits are (36X22)
I'm missing something or there is other rule for the naming convention that I'm not following?

Best Regards
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