Daan-
Try JEDEC MS-029 (www.eia.org)...I'm working the same issue...

> -----Original Message-----
> From: d. terstegge [SMTP:[log in to unmask]]
> Sent: Monday, June 22, 1998 8:52 AM
> To:   [log in to unmask]
> Subject:      [TN] fine-pitch component specification
>
> Hello Technet,
>
> Sometimes I'm having bad placements with oure pick & place process
> due to bent corner leads on 0.5 mm pitch IC's. The machine then
> complains about an incorrect "run lenght" (distance between the
> center of the first, and the center of the last lead of the row) and
> gives us the choice of rejecting the part or placing it inaccurately.
> Instead of manually improving rejected components with tweezers or
> some other tools, I would prefer sending the components back to the
> supplier. The problem with this is that I'm not aware of any
> specification for things like "bent leads", "sweep (all leads
> pointing a little bit sideways)" or "run lenght". Does anyone know
> such a specifications ? Anyone knows of "generally accepted values" ?
>
> Daan Terstegge
> Unclassified
>
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