Axial miniature fuse with plastic molded body

Details Axial miniature fuse with plastic molded body Axial miniature fuse with plastic molded body

1987-12-30

1990-01-09

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

174 522, 337205, H01H 8502

Patent

active

048931071

ABSTRACT:
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 insulating layer of thermo-plastic (7). Improved humidity resistance and mechanical strength are achieved and control of coating thickness is improved. Use of hot plastic for the insulating layer (7) reflows solder joint (4) reducing instances of open or high resistance fuses which must be rejected. Also, the I.sup.2 t performance is significantly improved over other adherent coatings.

REFERENCES:
patent: 3254282 (1966-05-01), West
patent: 3914863 (1975-10-01), Wiebe
patent: 4164725 (1979-08-01), Wiebe
patent: 4385281 (1983-05-01), McAlear et al.

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