Arc quenching and flame retarding coating for electronic devices

A thermally protected metal oxide varistor (TMOV) device comprising:

• a MOV chip;
• electrically conductive first and second electrodes disposed on opposite sides of the MOV chip;
• an electrically conductive first lead connected to the first electrode;
• an electrically conducive second lead connected to a dielectric barrier disposed on the second electrode;
• a thermal cutoff (TCO) element having a first end electrically connected to the second lead on the dielectric barrier and a second end electrically connected to the second electrode;
• and
• an arc mitigating, flame retarding coating covering a juncture of the TCO element and the second electrode, the arc mitigating, flame retarding coating comprising a silicone composition formed of a filler material suspended in a silicone resin.

A positive temperature coefficient (PTC) device comprising:

• a PTC element comprising electrically conductive particles suspended in a non-conductive medium;
• electrically conductive first and second electrodes disposed on opposite sides of the PTC element;
• electrically conductive first and second leads connected to the first and second electrodes, respectively;
• and
• an arc mitigating, flame retarding coating covering the PTC element, the first and second electrodes, and portions of the first and second leads, the arc mitigating, flame retarding coating comprising a silicone composition formed of a filler material suspended in a silicone resin.

A fuse comprising:

• a dielectric fuse body;
• first and second electrically conductive endcaps disposed on opposing ends of the fuse body;
• a fusible element extending through the fuse body and electrically connected to the first and second endcaps;
• and
• an arc mitigating, flame retarding coating covering the fuse body, the arc mitigating, flame retarding coating comprising a silicone composition formed of a filler material suspended in a silicone resin.