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MX9709974A - Improved method and apparatus for a surface-mounted fuse device. - Google Patents

Improved method and apparatus for a surface-mounted fuse device.

Info

Publication number
MX9709974A
MX9709974A MX9709974A MX9709974A MX9709974A MX 9709974 A MX9709974 A MX 9709974A MX 9709974 A MX9709974 A MX 9709974A MX 9709974 A MX9709974 A MX 9709974A MX 9709974 A MX9709974 A MX 9709974A
Authority
MX
Mexico
Prior art keywords
improved method
fuse device
protective layer
supporting substrate
subassembly includes
Prior art date
Application number
MX9709974A
Other languages
Spanish (es)
Other versions
MXPA97009974A (en
Inventor
Vladimir Blecha
Katherine M Mcguire
Andrew J Neuhalfen
Daniel B Onken
Original Assignee
Littelfuse Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/482,829 external-priority patent/US5943764A/en
Application filed by Littelfuse Inc filed Critical Littelfuse Inc
Publication of MX9709974A publication Critical patent/MX9709974A/en
Publication of MXPA97009974A publication Critical patent/MXPA97009974A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/046—Fuses formed as printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
    • H01H69/02—Manufacture of fuses
    • H01H69/022—Manufacture of fuses of printed circuit fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/0411—Miniature fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H01H85/11—Fusible members characterised by the shape or form of the fusible member with applied local area of a metal which, on melting, forms a eutectic with the main material of the fusible member, i.e. M-effect devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuses (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Lock And Its Accessories (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

A thin film surface-mount fuse (58) having two material subassemblies. The first subassembly includes a fusible link (42), its supporting substrate (13) and terminal pads (34, 36). The second subassembly includes a protective layer (56) which overlies the fusible link (42) so as to provide protection from impacts and oxidation. The protective layer (56) is preferably made of a polymeric material. The most preferred polymeric material is a polyurethane gel or paste. In addition, the most preferred supporting substrate is an FR-4 epoxy or a polyimide.
MXPA/A/1997/009974A 1995-06-07 1997-12-08 Method and improved apparatus for a superfield fused device MXPA97009974A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US47256395A 1995-06-07 1995-06-07
US08/482,829 US5943764A (en) 1994-05-27 1995-06-07 Method of manufacturing a surface-mounted fuse device
US472563 1995-06-07
US08482829 1995-06-07

Publications (2)

Publication Number Publication Date
MX9709974A true MX9709974A (en) 1998-06-28
MXPA97009974A MXPA97009974A (en) 1998-10-30

Family

ID=

Also Published As

Publication number Publication date
WO1996041359A1 (en) 1996-12-19
ATE173355T1 (en) 1998-11-15
CN1191624A (en) 1998-08-26
CA2224070A1 (en) 1996-12-19
DE69600974D1 (en) 1998-12-17
AU6154796A (en) 1996-12-30
ES2124634T3 (en) 1999-02-01
JPH10512094A (en) 1998-11-17
EP0830704A1 (en) 1998-03-25
DK0830704T3 (en) 1999-07-26
EP0830704B1 (en) 1998-11-11
DE69600974T2 (en) 1999-06-10

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal