Special-purpose pad name convention about horizon-pool-convention HOT 2 OPEN

I like MECH for mechanical pins, CASE sounds more like something that you have to manually solder on (e.g. like a cable onto the back of a potentiometer).

The rest is okay.

from horizon-pool-convention.

An edge case to consider: What name should a TO-3 BJT's collector (which is connected to the package's metal case) get? IMHO, CASE would be the most logical option. I'd propose the following rules:

• CASE for mechanically and electrically important (i.e. not just a regular pin that is fused to the metal case like with a TO-18) connections to a part's or module's metal case.
• TAB for horizontally mounted power transistors/ICs.
• MECH for mechanical stabilisation without an important electrical connection.
• SHIELD only for connectors and cables where it is connected to a cable shield.

That does leave a few unclarities, e.g. if a crystal should have a CASE or MECH, but I can't think of a better solution.

from horizon-pool-convention.