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From time to time, i'd like to be able to make a custom flat tray for putting 'odd' parts in, or something i dont' have a JEDEC tray for..
I was wondering what the best material would be to use. I'd though about using aliumnum and milling it.. ( that would be a reletively simple task, since i have the tools to do this ).. however, i was put off this, when it was pointed out to me that ESD wise that’s a bad idea, when the alumium surface oxidises and is no longer conductive..
Any suggestions?
- Comments(1)
A****min
Nov 15.2019, 18:06:15
For ESD the last thing you want is a highly conductive surface. People often concentrate on the "ES", where it's the "D" that can cause damage.
However for individual parts, they are small enough that ESD isn't going to be an issue as they have so little capacitance that you'd struggle to get any significant discharge.
For a SMD parts tray, no material is going to be an issue ESD-wise - the primary consideration is mechanical - how easy to machine, lack of electrostatic stickyness, non dust-producing etc.
IMO the only time ESD can be a practical risk is on an assembled board, as the board as a whole is big enough to to build up a charge that gets discharged when touched, or has sufficient capacitance to ground that a touch from a charged person can cause enough current flow to cause damage.
