Re: to-220 shoulder washers



On Sun, 28 Sep 2008 23:13:31 -0700, Jamie Morken wrote:

Most to-220 shoulder washers I've seen only have about 0.01" plastic
material between the screw and the TO-220 metal tab, for 600VDC
operation this seems to be a bit low, there is room for thicker material
in between a 4-40 screw and the TO-220 tab, maybe 0.016" material,
anyone know of a shoulder washer that has a thicker insulation in this area?

The dielectric constant of nylon is 500-600V/.001", so you should be fine
with the one you have.

Cheers!
Rich

.



Relevant Pages

  • Re: to-220 shoulder washers
    ... Most to-220 shoulder washers I've seen only have about 0.01" plastic ... material between the screw and the TO-220 metal tab, ... in between a 4-40 screw and the TO-220 tab, maybe 0.016" material, ... anyone know of a shoulder washer that has a thicker insulation in this area? ...
    (sci.electronics.design)
  • Re: to-220 shoulder washers
    ... Most to-220 shoulder washers I've seen only have about 0.01" plastic ... material between the screw and the TO-220 metal tab, ... in between a 4-40 screw and the TO-220 tab, maybe 0.016" material, ... anyone know of a shoulder washer that has a thicker insulation in this area? ...
    (sci.electronics.design)
  • Re: to-220 shoulder washers
    ... Most to-220 shoulder washers I've seen only have about 0.01" plastic ... material between the screw and the TO-220 metal tab, ... in between a 4-40 screw and the TO-220 tab, maybe 0.016" material, ... Use a fully moulded part or a clip. ...
    (sci.electronics.design)
  • to-220 shoulder washers
    ... Most to-220 shoulder washers I've seen only have about 0.01" plastic material between the screw and the TO-220 metal tab, for 600VDC operation this seems to be a bit low, there is room for thicker material in between a 4-40 screw and the TO-220 tab, maybe 0.016" material, anyone know of a shoulder washer that has a thicker insulation in this area? ...
    (sci.electronics.design)
  • Re: to-220 shoulder washers
    ... Most to-220 shoulder washers I've seen only have about 0.01" plastic ... material between the screw and the TO-220 metal tab, ... in between a 4-40 screw and the TO-220 tab, maybe 0.016" material, ... and hard fiber too. ...
    (sci.electronics.design)