Hello everyone,
I have an RF board with stitch holes connecting top to bottom ground planes.
I would like those holes to be filled.
Does anyone know how to define filled holes in Orcad?
Thank you,
Sofia
sofia:
I have an RF board with stitch holes connecting top to bottom ground planes.I would like those holes to be filled.
Does anyone know how to define filled holes in Orcad?
It depends on what you call a filled hole, it could be solder flooded, solder mask covered or both.
If you want them solder flooded then leave a hole in the solder mask and allow them to flood in the flow solder machine. If it is a SMD board then you can have the solder paste and re-flow oven do the job.
If you are not happy with either of these solutions then ask your board shop what drill size to specify that will get the holes flooded at the board plating stage. Just be aware that if you are ordering volume the board makers are usually unable to drill stacked boards with holes less than 24thou (0.6mm) so you may incur a time cost penalty.
I generally speaking have holes ‘capped’ by the solder mask for production boards and leave them open on prototypes for the circuit designers to use them for getting link wires through from one side to the other.
Trust me it happens!
How you define them in Orcad will be for someone else to help out with, as its over 15 years since I used the package.
Hope this helps.