As a leading enterprise in the global circuit protection field, Littelfuse's fuse product system covers a wide range of application scenarios and technical requirements. According to publicly available information, the types of fuses can be classified into the following categories:
1、 Classified by structure and packaging form
Surface mount fuses (SMD)
Disposable patch fuses: including Nano ² series (such as 415 series, with a breaking current of 1500A at 277V), flat package fuses, and thin film patch fuses (such as 0429 and 0430 series).
Self healing fuse (PPTC): It achieves overcurrent protection through a positive temperature coefficient and is divided into patch type (such as 0603, 0805 and other imperial sizes) and plug-in type (such as 16R, 30R series).
Axial, radial, and through-hole fuses
Including PICO fuses, HVAC fuses, etc., suitable for traditional circuit design.
Box/tube fuse
High current box type fuse: such as the 607 series, supports 500V AC/DC voltage, rated current 40A63A, suitable for high-power scenarios such as data centers and electric vehicle charging.
Delay type ceramic fuse: such as the 835 series, with high surge tolerance (1.5kA), suitable for devices such as LED TVs and digital signs that are easily affected by transient surges.
2、 Classified by application field
Car fuse
Including plug-in fuses (such as 089107.5NXT, 7.5A 58VDC), bolt fuses, etc., covering the automotive aftermarket and commercial vehicle circuit protection.
Industrial and power fuses
Universal L-type fuses: such as the LDC series, supporting 600V AC/DC voltage, suitable for high voltage scenarios such as UPS protection and rail transit.
Military high reliability fuse: designed specifically for harsh environments to meet the needs of military equipment.
Consumer Electronics and Home Appliance Fuses
Including miniature fuses (such as plastic sealed square 392 series), ceramic/glass fuses, suitable for power adapters, smart homes, etc.
3、 Classified by protection characteristics
Quick break and slow break fuses
Fast break type is used for sensitive circuits, while slow break type (such as resistor fuse 471 series) can withstand short-term overload.
High wave surge resistant fuse
The Nano ² 415 series and 835 series are optimized for voltage fluctuation environments, with a breaking capacity of up to 1500A, suitable for inverters, charging stations, etc.
Self healing fuse (PPTC)
Automatic reset is achieved through temperature sensitive materials to reduce maintenance costs, commonly used in consumer electronics port protection.
4、 Special functions and authentication types
UL certified fuse
Compliant with UL standards (such as UL24814), suitable for industrial power supplies and general equipment.
Environmentally friendly fuses
Compliant with RoHS and lead-free standards, such as the 607 series and 835 series.
5、 Other segmented categories
Miniature fuses: such as the plastic sealed square 392 series and circular 382 series, suitable for small devices with limited space.
Dangerous area type fuse: specially designed for flammable and explosive environments, such as the petrochemical and mining industries.
Lite fuses cover a wide range of needs from consumer electronics to industrial power, automotive to military industries through diverse packaging forms, application scenarios, and functional characteristics. Its technological innovation is mainly reflected in high wave tolerance, self recovery function, and compact design, providing high reliability and flexibility for circuit protection. For specific model selection or technical parameters, please refer to official materials or information provided by authorized dealers.