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Pin numbering

LSAUGE

Hello,

Sorry, I have the impression that I ask a lot of questions these days. ^^'

I have two questions concerning pin numbering :

1) In a package symbol, I have two mechanical holes. These mechanical holes have a pin number. Is it mandatory to have a pin number for mechanical holes ? It's just a hole for guiding the plastic part of the component and I don't want to have a pin for these holes in the schematic in Capture.

2) Is it mandatory to have the same number of pins on the schemtic than on the footprint ? The reason is that I have a schematic that have a lot of relays. For readability purposes, I draw the relay symbol as a simple switch with two pins but in fact the footprint has 4 pins (2 pins for the coil of course). Do I have to have 4 pins in my schematic or is there a workaround ?

Thanks a lot in advance

Loïc

  • in reply to Wild

    Physical set are for copper witdth, layer allowed or not and so on: not for spacing purpose. Spacing matrix is only in sacing sets.

    i doubt you can assign a spaing type to a pin: it is linked to nets.. No pin number => no net can be siigned => no spacing type can be assigned.

    This is why we treat mechanical pins as eletrical one with a pin number..

  • in reply to jc teyssier

    Sorry for the Typo (not enough coffee), I meant the SCS (Spacing Constraint Set) Disappointed, once again there are spacing rules for hole to line, pin, via, shape and hole.  I have attached a screen shot from my 16.6 Rev of a mechanical slot with the properties options shown.  Would this not also work?

    5KV creepage hole.

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