It will be good if it will be selectable as option
В Среда, 15 июн. 2016 в 12:40 , Cirilo Bernardo
<[email protected]> написал:
Hi Eldar,
The problem I have is that different standards have different
orientations. Even IPC now have "Orientation Level A", which is what
is described in 7351B, and another one where Pin 1 is in what the EIA
packaging standards call "Quadrant 3" (bottom left). The EIA
specification in turn specifies a different orientation for Pin1
depending on the SMT package. To make things worse, some
manufacturers provide the same part in different orientations on
tape. So while I can specify that the given orientations are
according to IPC-7351B, to help users determine the orientation
without ambiguity, it is good to have the Pin1 location in the
position file as well.
- Cirilo
On Wed, Jun 15, 2016 at 2:21 AM, Eldar Khayrullin
<[email protected]> wrote:
Look at IPC 7351 - 16 ZERO COMPONENT ORIENTATIONS and Figure 16-1.
В Вторник, 14 июн. 2016 в 6:53 , Cirilo Bernardo
<[email protected]> написал:
Hi folks,
Some assembly houses prefer to have a Pad1 location in addition
to the part centroid location; this makes the orientation of the
component unambiguous and can help in cases where the user's
footprint doesn't align with the tape orientation of a component.
Would this be a useful addition to the placement file or are there
any objections to it?
- Cirilo
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