Data Sheet

PCB Layout

109

The nomenclature of pads in the PCB Layout is designed for easy reading and tends to follow

the following format:

Units are in imperial unless prefixed with an ‘M’ so for example a C-40-15 is a circular pad with

a 40th diameter and a 15th hole and a C-200-M3 is a circular pad with a 0.2in diameter and a

3mm hole. Our spec requires a pad with a 0.18in diameter and a 3mm hole, which we can see

does not exist in the pre-supplied set. We therefore need to create the pad as follows:

1) From the Library Menu select the New Pad Style command.

2) Enter a name for the pad; we recommend you follow the standard naming convention (i.e. C-

180-M3).

3) Specify the pad type – in our case we want Circular through hole pad.