Over-current protection device and protective circuit module containing the same
US9679683B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2015 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Feb 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An over-current protection device comprises a PTC device and a first external lead. The PTC device comprises first and second conductive layers and a PTC material layer laminated therebetween. The first conductive layer forms an upper surface of the PTC device. The first external lead has a lower surface soldered to the first conductive layer. The lower surface is provided with a plurality of protrusions of which tops are in direct contact with the first conductive layer to form a gap between the first external lead and the first conductive layer. Solder paste fills the gap to form an electrically conductive connecting layer. The over-current protection device may further comprise a second external lead with protrusions soldered to the second conductive layer to form an axial-lead or a radial-lead type device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.