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23 条记录 (耗时 0.013 秒)

    INTERDIGITATED 2-D POSITIVE TEMPERATURE COEFFICIENT DEVICE
    4.
    发明申请
    INTERDIGITATED 2-D POSITIVE TEMPERATURE COEFFICIENT DEVICE 审中-公开

    公开(公告)号：US20190027796A1

    公开(公告)日：2019-01-24

    申请号：US15654860

    申请日：2017-07-20

    申请人： Littelfuse, Inc.

    发明人： Yuriy B. Matus ,  Martin G. Pineda ,  Chun-Kwan Tsang

    IPC分类号： H01M10/637 ,  H01M10/42 ,  H02H7/18

    摘要： Provided herein are positive temperature coefficient (PTC) devices including interdigitated contacts. In one approach, a PTC device includes a core component, and a first contact and a second contact disposed along a first side of the core component. Each of the first and second contacts may include a frame member, and a plurality of digits extending perpendicularly from the frame member. The plurality of digits of the first contact may be interleaved with the plurality of digits of the second contact. In some embodiments, the plurality of digits of the first contact and the plurality of digits of the second contact extend along a same plane, and are arranged substantially parallel to one another. In some embodiments, a polymer PTC material layer is provided over the plurality of digits of the first and second contacts. The interleaved contact digits permit the PTC device to function as a 2-D current collector.

    CIRCUIT PROTECTION DEVICE WITH PTC DEVICE AND BACKUP FUSE
    7.
    发明申请
    CIRCUIT PROTECTION DEVICE WITH PTC DEVICE AND BACKUP FUSE 有权

    公开(公告)号：US20230037262A1

    公开(公告)日：2023-02-02

    申请号：US17779007

    申请日：2020-11-13

    申请人： Littelfuse, Inc.

    发明人： Yuriy Borisovich Matus ,  Martin G. Pineda ,  Sergio Fuentes

    IPC分类号： H01C7/02 ,  H01C1/14 ,  H01C1/08 ,  H01H85/048 ,  H01H85/02

    摘要： A circuit protection device including a positive temperature coefficient (PTC) device and a backup fuse electrically connected in series with one another, the backup fuse comprising a quantity of solder disposed on a dielectric chip and having a melting temperature that is higher than a trip temperature of the PTC device, wherein the a surface of the dielectric chip exhibits a de-wetting characteristic relative to the solder such that, when the solder is melted, the solder draws away from the surface to create a galvanic opening in the backup fuse.

    OVERCURRENT PROTECTION DEVICE AND METHOD OF FORMING AN OVERCURRENT PROTECTION DEVICE
    8.
    发明申请
    OVERCURRENT PROTECTION DEVICE AND METHOD OF FORMING AN OVERCURRENT PROTECTION DEVICE 审中-公开

    公开(公告)号：US20190131101A1

    公开(公告)日：2019-05-02

    申请号：US15801545

    申请日：2017-11-02

    申请人： Littelfuse, Inc.

    发明人： Martin G. Pineda ,  Sergio Fuentes ,  Chun-Kwan Tsang

    IPC分类号： H01H77/04 ,  H01H71/08 ,  H01H71/14 ,  H01H69/00

    摘要： An overcurrent protection device according to an embodiment of the present disclosure may include a first electrode disposed substantially parallel to a second electrode. A material may be disposed between the first electrode and the second electrode. A plurality of conductive material nodules may be disposed in the material between the first electrode and the second electrode, including a first conductive material nodule at least partially contacting an inner surface of the first electrode and a second conductive material nodule at least partially contacting an inner surface of the second electrode and the first conductive material nodule. In response to an overcurrent condition the material may be configured to expand, such that the contact between the first electrode, the first conductive material nodule, the second conductive material nodule, and the second electrode is at least partially interrupted.

    TEMPERATURE SENSING TAPE
    9.
    发明申请
    TEMPERATURE SENSING TAPE 审中-公开

    公开(公告)号：US20190072436A1

    公开(公告)日：2019-03-07

    申请号：US16122535

    申请日：2018-09-05

    申请人： Littelfuse, Inc.

    发明人： Boris Golubovic ,  Martin G. Pineda ,  Yuriy Borisovich Matus ,  Jianhua Chen

    IPC分类号： G01K7/22 ,  G01K1/14 ,  H01B7/04 ,  H01C1/14 ,  C09J9/02

    摘要： A temperature sensing tape including a flexible, electrically insulating substrate, a plurality of temperature sensing elements disposed on the substrate, each temperature sensing element including a first electrode and a second electrode arranged in a confronting, spaced-apart relationship to define a gap therebetween, and a variable resistance material disposed within the gap and connecting the first electrode to the second electrode, wherein the first electrode of at least one of the temperature sensing elements is connected to the second electrode of an adjacent temperature sensing element by a flexible electrical conductor.

    PTC device with integrated fuses for high current operation
    10.
    发明授权
    PTC device with integrated fuses for high current operation 有权

    公开(公告)号：US11501942B2

    公开(公告)日：2022-11-15

    申请号：US17538067

    申请日：2021-11-30

    申请人： Littelfuse, Inc.

    发明人： Yuriy Borisovich Matus ,  Martin G. Pineda

    IPC分类号： H01H85/02 ,  H01C7/02 ,  H01H85/20 ,  H01H85/055

    摘要： A circuit protection device including a PTC device having a PTC element, first and second electrodes disposed on opposing first and second surfaces of the PTC element, respectively, first and second chip fuses disposed on the first and second electrodes, respectively, the second chip fuse electrically connected in series with the PTC device, and the first chip fuse electrically in connected parallel with the PTC device and the second chip fuse, the first chip fuse having a lower electrical resistance than the PTC element when the PTC element is in a non-tripped state, wherein a fusible element of the first chip fuse has a first melting temperature and is configured to carry a current higher than the PTC element can carry without tripping, and wherein a fusible element of the second chip fuse has a second melting temperature that is greater than the first melting temperature.