SURFACE MOUNTABLE PPTC DEVICE WITH INTEGRAL WELD PLATE

A surface mount circuit protection device (10) includes a laminar PTC resistive element (12) having first and second major surfaces and a thickness (t) therebetween. A first electrode layer (14) substantially coextensive with the first surface is formed of a first metal material of a type adapted to...

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Bibliographic Details
Main Authors CHANDLER DANIEL A, GALLA MATTHEW P
Format Patent
LanguageEnglish
Published 15.05.2006
Subjects
BASIC ELECTRIC ELEMENTS
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
PRINTED CIRCUITS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
RESISTORS
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Summary:A surface mount circuit protection device (10) includes a laminar PTC resistive element (12) having first and second major surfaces and a thickness (t) therebetween. A first electrode layer (14) substantially coextensive with the first surface is formed of a first metal material of a type adapted to be soldered to a printed circuit substrate. A second electrode layer (16) formed at the second major surface includes a structure forming or defining a weld plate (18). The metal weld plate (18) has a thermal mass and thickness (t w ) capable of withstanding resistance to micro-spot welding of a strap interconnect without significant resultant damage to the device. The device (10) is preferably surface mounted to a printed circuit board assembly forming a battery protection circuit connected to a battery/cell by battery strap interconnects, wherein one of the battery strap interconnects is micro spot welded to the weld plate of the device.
Bibliography:Application Number: KR20050020916