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1. 发明授权

US10804013B2 Over-current protection device 有权
公开(公告)号：US10804013B2
公开(公告)日：2020-10-13
申请号：US16589704
申请日：2019-10-01
申请人： Polytronics Technology Corp.
发明人： Chun-Teng Tseng , David Shau Chew Wang
IPC分类号： H01C1/14 , H01C7/13 , H02H9/02 , H01C7/02
摘要： An over-current protection device is a hexahedron comprising an upper surface, a lower surface and four lateral surfaces. The over-current protection device comprises a PTC device, a first insulating layer, a first electrode layer and a second electrode layer. The PTC device comprises a first conductive layer, a second conductive layer and a PTC material layer laminated therebetween. The first conductive layer comprises a first conductive section and a second conductive section separated by at least one trench. The first insulating layer is disposed on the first conductive layer. The first electrode layer is disposed on the first insulating layer and electrically coupled to the first conductive section. The second electrode layer is disposed on the first insulating layer and electrically coupled to the second conductive section. The trench comprises a primary portion not parallel to a longitudinal direction of the first and second electrode layers.

2. 发明授权

US10395876B1 Protection device 有权
公开(公告)号：US10395876B1
公开(公告)日：2019-08-27
申请号：US16290317
申请日：2019-03-01
申请人： Polytronics Technology Corp.
发明人： Tsung Min Su , Chia Mao Chen , David Shau Chew Wang
IPC分类号： H01H85/00 , H01H69/02 , H01H85/20 , H01H85/04 , H01H85/041
摘要： A protection device comprises a first planar substrate, a second planar substrate, a heater and a fusible element. The first planar substrate comprises a first surface, and the second planar substrate comprises a second surface facing the first surface. The heater comprises a first heating element and a second heating element in parallel connection, and the first heating element is disposed on the first surface. The fusible element is disposed on the first surface and adjacent to the first and second heating elements, thereby the fusible element is melted by absorbing the heat generated by the first heating element and/or second heating element. The second heating element has a resistance at least twice that of the first heating element.

3. 发明授权

US10056176B2 Over-current protection device 有权
公开(公告)号：US10056176B2
公开(公告)日：2018-08-21
申请号：US15156813
申请日：2016-05-17
申请人： Polytronics Technology Corp.
发明人： David Shau Chew Wang , Chun Teng Tseng , Tsungmin Su , Yao Te Chang
IPC分类号： H01C7/02
CPC分类号： H01C7/021 , H01C7/027
摘要： An over-current protection device comprises a PTC device and a heating element operable to heat the PTC device. The PTC device contains crystalline polymer and metal or ceramic conductive filler dispersed therein. The PTC device has a resistivity less than 0.1 Ω·cm. The over-current protection device has the relation: It (heating)

4. 发明授权

US10147573B1 Reflowable thermal fuse 有权
公开(公告)号：US10147573B1
公开(公告)日：2018-12-04
申请号：US15662935
申请日：2017-07-28
申请人： POLYTRONICS TECHNOLOGY CORP.
发明人： Tsungmin Su , Tongcheng Tsai , David Shau Chew Wang
IPC分类号： H01H37/76 , H01H37/34 , H01H37/64 , H01H85/041
摘要： A reflowable thermal fuse comprises a conduction element with first and second elastic portions, a sensor, a restraining element, a heating element and mounting pads. The first elastic portion is adapted to apply force on the conduction element in an activated state of the thermal fuse. The sensor is in mechanical communication with the first elastic portion of the conduction element. The restraining element is adapted to secure the second elastic portion of the conduction element and thereby prevent the second elastic portion from applying force on the conduction element in an installation state of the thermal fuse. Application of an activating current through the heating element causes heat generated and transferred to the restraining element and makes the restraining element to lose resilience, thereby releasing the second elastic portion and placing the thermal fuse in the activated state. The sensor loses its ability to hold the first elastic portion in place and allows the conduction element to open during a subsequent fault condition.

5. 发明授权

US09041507B2 Surface mountable over-current protection device 有权
标题翻译：表面贴装过流保护装置
公开(公告)号：US09041507B2
公开(公告)日：2015-05-26
申请号：US13910916
申请日：2013-06-05
申请人： POLYTRONICS TECHNOLOGY CORP.
发明人： David Shau Chew Wang , Wen Feng Lee , En Tien Yang , Chun Teng Tseng , Yi An Sha
IPC分类号： H01C7/10 , H01C7/02
CPC分类号： H01C7/027 , H01C7/021
摘要： A surface mountable over-current protection device comprises one PTC material layer, first and second conductive layers, first and second electrodes, and an insulating layer. The PTC material layer comprises crystalline polymer and conductive filler dispersed therein. The first and second conductive layers are disposed on first and second planar surfaces of the PTC material layer, respectively. The first and second electrodes are electrically connected to the first and second conductive layers. The insulating layer is disposed between the first and the second electrodes for insulation. At the melting point of the crystalline polymer, the CTE of the crystalline polymer is greater than 100 times the CTE of the first or second conductive layer, and the first and/or second conductive layers has a thickness which is large enough to obtain a resistance jump value R3/Ri less than 1.4.
摘要翻译：表面安装的过电流保护装置包括一个PTC材料层，第一和第二导电层，第一和第二电极以及绝缘层。 PTC材料层包括分散在其中的结晶聚合物和导电填料。第一和第二导电层分别设置在PTC材料层的第一和第二平面上。第一和第二电极电连接到第一和第二导电层。绝缘层设置在第一和第二电极之间用于绝缘。在结晶聚合物的熔点，结晶聚合物的CTE大于第一或第二导电层的CTE的100倍，并且第一和/或第二导电层的厚度足够大以获得电阻跳转值R3 / Ri小于1.4。

6. 发明授权

US08933775B2 Surface mountable over-current protection device 有权
标题翻译：表面贴装过流保护装置
公开(公告)号：US08933775B2
公开(公告)日：2015-01-13
申请号：US13910880
申请日：2013-06-05
申请人： Polytronics Technology Corp.
发明人： David Shau Chew Wang , Fu Hua Chu , Chun Teng Tseng
IPC分类号： H01C7/10 , H01C7/13 , H01C7/02 , H01C1/08 , H01C1/14 , H01C17/065
CPC分类号： H01C7/021 , H01C1/08 , H01C1/1406 , H01C7/027 , H01C17/0652 , H01C17/06526 , H01C17/06566
摘要： A surface-mountable over-current protection device comprises one PTC material layer, first and second connecting conductors, first and second electrodes and an insulating layer. The PTC material layer has a resistivity less than 0.2 Ω-cm, and comprises crystalline polymer and conductive filler dispersed therein. The first and second connecting conductors are capable of effectively dissipating heat generated from the PTC material layer. The first and second electrodes are electrically connected to first and second surfaces of the PTC material layer through the first and second connecting conductors, respectively. The dissipation factor depending on the ratio of the total area of the electrodes and the conductors to the area of the PTC material layer is greater than 0.6. At 25° C., the value of the hold current of the device divided by the product of the area of the PTC material layer and the number of the PTC material layer is greater than 1A/mm2.
摘要翻译：表面安装式过流保护装置包括一个PTC材料层，第一和第二连接导体，第一和第二电极以及绝缘层。 PTC材料层的电阻率小于0.2Ω·cm·cm，并且包含分散在其中的结晶聚合物和导电填料。第一和第二连接导体能够有效地散发由PTC材料层产生的热量。第一和第二电极分别通过第一和第二连接导体电连接到PTC材料层的第一和第二表面。取决于电极和导体的总面积与PTC材料层的面积的比率的耗散因数大于0.6。在25℃时，器件的保持电流值除以PTC材料层的面积与PTC材料层的数量的乘积大于1A / mm2。

7. 发明授权

US08482373B1 Over-current protection device 有权
标题翻译：过电流保护装置
公开(公告)号：US08482373B1
公开(公告)日：2013-07-09
申请号：US13718953
申请日：2012-12-18
申请人： Polytronics Technology Corp.
发明人： Chun Teng Tseng , David Shau Chew Wang
IPC分类号： H01C7/10
CPC分类号： H01C7/02 , H01C7/13
摘要： An over-current protection device comprises a PTC material layer, first and second conductive layers, first and second electrodes, and four conductive vias. The first and second conductive layers are in physical contact with first and second surfaces of the PTC material layer, respectively. The first electrode contains a pair of first metal foils, and the second electrode contains a pair of second metal foils. The four conductive vias are formed at the corners each defined by two adjacent planar lateral surfaces. Two conductive vias connect the pair of the first metal foils and the first conductive layer, and the other two conductive vias connect the pair of the second metal foils and the second conductive layer. The ratio of the sum of the cross-sectional areas of the conductive vias to a form factor area of the device is in the range of 7% to 20%.
摘要翻译：过电流保护装置包括PTC材料层，第一和第二导电层，第一和第二电极以及四个导电通孔。第一和第二导电层分别与PTC材料层的第一和第二表面物理接触。第一电极包含一对第一金属箔，第二电极包含一对第二金属箔。四个导电通孔形成在由两个相邻的平面侧表面限定的角部处。两个导电通孔连接一对第一金属箔和第一导电层，另外两个导电通孔连接一对第二金属箔和第二导电层。导电通孔的横截面面积与器件的形状因子面积之和的比率在7％至20％的范围内。

8. 发明授权

US10892130B2 Protection device and circuit protection apparatus containing the same 有权
公开(公告)号：US10892130B2
公开(公告)日：2021-01-12
申请号：US15924841
申请日：2018-03-19
申请人： Polytronics Technology Corp.
发明人： Tsungmin Su , Tongcheng Tsai , David Shau Chew Wang
IPC分类号： H02H5/00 , H01H85/46 , H01H37/76 , H05K1/02 , H01H85/046
摘要： A protection device comprises a first planar substrate, a second planar substrate, a heating element and a fusible element. The second planar substrate is attached to the underside of the first planar substrate to form a composite structure. The heating element comprises an insulating layer and a heating layer disposed thereon. The heating element is disposed on the first planar substrate, and the insulating layer is disposed between the first planar substrate and the heating layer. The fusible element is disposed above the heating element. The heating element heats up to blow the fusible element in the event of over-voltage or over-temperature.

9. 发明授权

US10141089B1 Surface-mountable over-current protection device 有权
公开(公告)号：US10141089B1
公开(公告)日：2018-11-27
申请号：US15827873
申请日：2017-11-30
申请人： Polytronics Technology Corp.
发明人： David Shau Chew Wang , Tsungmin Su
IPC分类号： H01C1/14 , H01C7/02 , H02H9/02 , H01C1/034 , H01C1/16
摘要： A surface-mountable over-current protection device comprises at least one chip, a first lead and a second lead. The chip comprises a PTC material layer and two metal electrode layers disposed on upper and lower surfaces of the PTC material layer. The first lead is bent into multiple portions comprising a first electrode connecting portion connecting to one of the two metal electrode layers of the at least one chip and a first soldering portion for surface-mounting. The second lead is bent into multiple portions comprising a second electrode connecting portion connecting to another one of the two electrode layers of the at least one chip and a second soldering portion for surface-mounting. The PTC material layer comprises crystalline polymer and conductive filler dispersed therein, and the conductive filler has a resistivity less than 500μΩ·cm. The surface-mountable over-current protection device can withstand a cycle life test of 300 cycles at 20V/40A without blowout.

10. 发明授权

US10453594B1 PTC device 有权
公开(公告)号：US10453594B1
公开(公告)日：2019-10-22
申请号：US16290191
申请日：2019-03-01
申请人： Polytronics Technology Corp.
发明人： Chun Teng Tseng , David Shau Chew Wang
IPC分类号： H01C7/02 , H01C1/14 , G01K7/16 , G01R19/165 , H01C17/00
摘要： A PTC device comprises a current and temperature sensing element, a first insulating layer, a second insulating layer, a first electrode layer and a second electrode layer. The current and temperature sensing element is a laminated structure comprising a first electrically conductive layer, a second electrically conductive layer and a PTC material layer. The first and second electrically conductive layers are disposed on first and second surfaces of the PTC material layer. The first and second insulating layers are disposed on the first and second electrically conductive layers. The first electrode layer is disposed on the first insulating layer and electrically connects to the first electrically conductive layer. The second electrode layer is disposed on the second insulating layer and electrically connects to the second electrically conductive layer. The first and second electrode layers serve as solder attach surfaces for soldering the PTC device onto a circuit board.

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