On Mon, May 23, 2011 at 10:01 PM, Denny Esterline wro= te: > Uhm... still no mounting holes... > It's not finished yet! I'll be sure to put appropriate mounting holes for M= 3 hex standoffs. > I don't know what you're doing with the TO220 parts, but anything that > needs > a package that big will likely not be happy with those skinny little > traces. > Those are specifically BUZ71 N channel MOSFETs. The MOSFETS switch a 12V AC relay. It doesn't actually take /that/ much power and the MOSFET won't even get a little warm because the relay won't that /that/ much power. I just found that that particular MOSFET was suitable for my needs. And BUZ71 is only available in that package: http://ca.mouser.com/Search/Refine.aspx?Keyword=3Dbuz71 Specifically, they're being used to switch this relay: http://futurlec.com/Relays/PR12VDCSPST.shtml - Coil Power: 1200 mW - Nominal Voltage: 12Vdc - Coil Resistance: 120ohm Could you please suggest an alternative N channel MOSFET suitable for this use? The gate is being switched at 3.3V. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .