PCB Libraries Forum : Terminal Dimensions for Non-Standard Packages https://www.PCBLibraries.com/forum/ Tue, 07 Apr 2026 00:20:24 +0000 Wed, 12 Oct 2022 07:04:50 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.07 360 https://www.PCBLibraries.com/forum/RSS_post_feed.asp?TID=3162 <![CDATA[PCB Libraries Forum]]> https://www.PCBLibraries.com/forum/forum_images/PCBLForumLogo.gif https://www.PCBLibraries.com/forum/ <![CDATA[Terminal Dimensions for Non-Standard Packages : Thank you, Tom. ]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12625.html#12625 Author: mohamedjubair.k
Subject: 3162
Posted: 12 Oct 2022 at 7:04am

Thank you, Tom.]]> Wed, 12 Oct 2022 07:04:50 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12625.html#12625 <![CDATA[Terminal Dimensions for Non-Standard Packages : Make the &#034;Toe&#034; value...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12624.html#12624 Author: Tom H
Subject: 3162
Posted: 11 Oct 2022 at 9:44am

Make the "Toe" value the same dimension as the terminal lead thickness. 

Make the Heel value 0.35 mm and the side goal 0.05 mm. 

The terminal length is the white area that you define in your picture. 

The Pad Length is the Terminal Length + Toe + Heel. 

The pad width is the Terminal width + 0.10 mm

]]> Tue, 11 Oct 2022 09:44:07 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12624.html#12624 <![CDATA[Terminal Dimensions for Non-Standard Packages : Hi Tom,This is a DDR4 DIMM socket....]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12623.html#12623 Author: mohamedjubair.k
Subject: 3162
Posted: 11 Oct 2022 at 12:48am

Hi Tom,

This is a DDR4 DIMM socket. physical pin dimension is not mentioned in component drawing. As we discussed i downloaded a 3D step file. Now my question is from where to where the pin length measurement will be. I marked 2 way in attached image.
 
Because, Design rule checks will be based on physical dimensions of the pin. We will inspect toe and heel joint value for a lead based upon IPC and we will confirm the CAD footprint. 

So this pin length value is much important. Please educate me regarding this.
]]> Tue, 11 Oct 2022 00:48:19 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12623.html#12623 <![CDATA[Terminal Dimensions for Non-Standard Packages : Thank you Tom. ]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12567.html#12567 Author: mohamedjubair.k
Subject: 3162
Posted: 05 Sep 2022 at 6:45pm

Thank you Tom.]]> Mon, 05 Sep 2022 18:45:44 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12567.html#12567 <![CDATA[Terminal Dimensions for Non-Standard Packages : It is true that most surface mount...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12564.html#12564 Author: Tom H
Subject: 3162
Posted: 05 Sep 2022 at 9:53am

It is true that most surface mount connector manufacturer's do not provide the terminal lead dimensions. 

This is why we must use the mfr. recommended pattern for the PCB solder pattern. 

The only thing you can do is download the 3D STEP model and open it in a 3D model program like SolidWorks and use the measure feature. 

2-1445057-2 : MATE-N-LOK Rectangular Power Connectors | TE Connectivity

]]> Mon, 05 Sep 2022 09:53:34 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12564.html#12564 <![CDATA[Terminal Dimensions for Non-Standard Packages : Hi Tom,Part number is 2-1445057-2...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12563.html#12563 Author: mohamedjubair.k
Subject: 3162
Posted: 05 Sep 2022 at 9:45am

Hi Tom, 

Part number is 2-1445057-2 and from TE connectivity. This is for example only. Mostly for all connectors which has "L" lead form this dimension is not mentioned.

For creating VPL we will use mechanical dimensions only.
]]> Mon, 05 Sep 2022 09:45:53 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12563.html#12563 <![CDATA[Terminal Dimensions for Non-Standard Packages : I could investigate but I need...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12562.html#12562 Author: Tom H
Subject: 3162
Posted: 05 Sep 2022 at 9:10am

I could investigate but I need the mfr. name and part number.

]]> Mon, 05 Sep 2022 09:10:24 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12562.html#12562 <![CDATA[Terminal Dimensions for Non-Standard Packages : Hi Tom,Thank you for your reply....]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12561.html#12561 Author: mohamedjubair.k
Subject: 3162
Posted: 05 Sep 2022 at 9:04am

Hi Tom,

Thank you for your reply. Actually I need the mechanical dimensions of the lead to draw VPL Packages . I couldn't find this dimension alone in most of the connector datasheets. 

Why they are not mentioning length of the lead. Is there any way to find this other than 3D model.

Without this I couldn't draw VPL.
]]> Mon, 05 Sep 2022 09:04:30 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12561.html#12561 <![CDATA[Terminal Dimensions for Non-Standard Packages : You must use the manufacturer...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12560.html#12560 Author: Tom H
Subject: 3162
Posted: 05 Sep 2022 at 8:02am

You must use the manufacturer recommended pattern to create your footprint.

]]> Mon, 05 Sep 2022 08:02:52 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12560.html#12560 <![CDATA[Terminal Dimensions for Non-Standard Packages : Hi Everyone,Please anyone guide...]]> https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12559.html#12559 Author: mohamedjubair.k
Subject: 3162
Posted: 05 Sep 2022 at 5:51am

Hi Everyone,

Please anyone guide me, how to get this unknown dimension. Generally for all SMD connectors, lead length value is not mentioned in datasheet. 

Is there any other way, how to obtain this missing dimension other than 3D model.

Please help me out of this riddle. The below image is a sample.

]]> Mon, 05 Sep 2022 05:51:31 +0000 https://www.PCBLibraries.com/forum/terminal-dimensions-for-nonstandard-packages_topic3162_post12559.html#12559