Method of making an axial miniature fuse with plastic molded body

An improved electrical fuse having axial leads (5) and comprising a fuse wire in a cylindrical sleeve (2) supported at its ends by lead carrying end caps (3) is coated over the length of the fuse body by an adherent insulating layer of plastic (7). Improved humidity resistance and mechanical strengt...

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Bibliographic Details
Main Author MONTER; JOHN M
Format Patent
LanguageEnglish
Published 30.10.1990
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:An improved electrical fuse having axial leads (5) and comprising a fuse wire in a cylindrical sleeve (2) supported at its ends by lead carrying end caps (3) is coated over the length of the fuse body by an adherent insulating layer of plastic (7). Improved humidity resistance and mechanical strength are achieved and control of coating thickness is improved. Use of hot plastic for the adherent insulating layer (7) reflows solder joint (4) reducing instances of open or high resistance fuses which must be rejected. Also, the i2t performance is significantly improved over other adherent coatings.
Bibliography:Application Number: US19890339881