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Jeff Foster wrote:
> Looking at IPC-SM-782A amendment 1 (Oct 96) the TSOP48 is listed as a 12mm
> x 16mm package not 12mm x 20mm. Perhaps that's the problem you're having?
> If the 12mm x 16mm package is what you actually have I also noted that the
> center to center dimension for the pads was revised in amendment 1 from
> 15.40mm to 15.20mm. The pad size is unchanged at 0.30mm x 1.60mm.
>
> I haven't used this package so SM-782 is all I have to go by.
For what it is worth, the SMT PLUS Land Pattern Book (1995)
lists the TSOP48 as 12mm x 20mm,
with 0.254mm x 1.65mm pads,
on 19.4mm centers
Good Luck, Jack
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