Leland,
This is covered in ANSI/EIA 481.
> On Nov 10, 2015, at 3:26 PM, Leland Woodall <[log in to unmask]> wrote:
> 
> Folks,
> 
> Is there a set of standards governing SMD component tape and reel packaging?  I'm specifically interested in pocket dimensions for various sizes of chip resistors and two leaded diodes.  We recently had Panasonic in to help with some process improvement items, and they seemed to think that a contributing cause to our inverted rejects was due to oversized pockets.
> 
> Thanks in advance for your help.
> 
> Leland
> 
> 
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