Naming Convention Example SOT23
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Category: General
Forum Name: General Discussion
Forum Description: general topics not related to other forums
URL: https://www.PCBLibraries.com/forum/forum_posts.asp?TID=3408
Printed Date: 21 Dec 2024 at 7:31pm
Topic: Naming Convention Example SOT23
Posted By: vdamico7
Subject: Naming Convention Example SOT23
Date Posted: 07 Aug 2024 at 1:50am
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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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Replies:
Posted By: Tom H
Date Posted: 07 Aug 2024 at 7:15am
The L dimensions are Nominal.  Here is the datasheet for the TI Case Code DCK0003A  ------------- Stay connected - follow us! https://twitter.com/PCBLibraries" rel="nofollow - X - http://www.linkedin.com/company/pcb-libraries-inc-/" rel="nofollow - LinkedIn |
Posted By: vdamico7
Date Posted: 07 Aug 2024 at 8:15am
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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!!  |