Fuse Introduction

- Feb 02, 2018 -

1. Filament. Early original form of the fuse, directly to the screw lock, used in various sizes of old switches, sockets.

2. Flake (bare flake). Easier to use than old fashioned filaments.

3, glass tubular. There are several different sizes, common in electronic products.

6.3 x mm (diameter x length)

5 x mm

4. Ceramic tubular. There are several different shapes and sizes to prevent glass from bursting.

5, plastic sheet with metal sheet-shaped pin: car fuse.

6, surface and then component (SMD) type.

7, cylindrical shape, plug-in type: Directly welded to the circuit board, for the internal products.


Signs most fuses are marked on the body or end caps with markings indicating their rating. But the "chip type" fuse features little or no marking, making it very difficult to identify.

The fuses may have similar markedly different properties, identifying their markings. Fuse marks usually convey the following message:

Ampere's fuse rating

Voltage grade fuse

Time-current characteristic, i.e. speed fuse

Approved by national and international standards bodies

Manufacturer/Product Number/Series

Interrupt capability

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