Patent ID: 11881337
Assignee: LITTELFUSE ELECTRONICS (SHANGHAI) CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A polymer positive temperature coefficient (PPTC) material, comprising:
a polymer matrix, the polymer matrix comprising a first polymer;
a conductive filler, disposed in the polymer matrix;
and at least one polymer filler, dispersed within the polymer matrix, the at least one polymer filler comprising a second polymer, different from the first polymer, wherein the first polymer comprises a first melting temperature, and wherein the second polymer comprises a second melting temperature, the second melting temperature exceeding the first melting temperature by at least 20 C;
wherein the first polymer comprises epoxy, and wherein the second polymer comprises epoxy.