At 09:59 AM 9/22/98 +1000, Paul Arklay wrote:

>When creating smt polarised component geometries on your cad system for pcb
>design do you create them horizontally with the polarised side to the right
>or the left? In other words is there a standard for this when creating
>PCB footprints?

I don't know about standards; someone else wrote that there is one, but it
appears that this writer may have written "right," intending "left." Or the
standard has simply not been accepted in the industry, one or the other.
The *norm* is that pin 1 is on the left for rotation 0, and it is also the
norm that the positive pin of a polarized capacitor is pin 1. However,
diodes are typically pin 1 for the cathode, which is the marked side, so
you could call that the "polarized side." (A polarized component has *two*
sides, and both of them are polarized, one the opposite of the other!)

[log in to unmask]
Abdulrahman Lomax
P.O. Box 423
Sonoma, CA 95476

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