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I was just about to create a footprint for a Kingbright LED from the KP-2012 series. From looking at the data sheet I am somewhat irritated:

package

soldering pattern

As you can see, the package pad with is 1.25mm, while the actual solder pattern width is only 1.1mm.

Why would this be desired?

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    \$\begingroup\$ "Recommended" - is recommended. \$\endgroup\$
    – Nazar
    Jan 30 '15 at 14:12
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It probably has to do with optimizing self-centering and prevention of 'tombstoning'. The HSMX-C670 has a similar recommendation.

enter image description here

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