As a global leader in circuit protection, Littelfuse's fuse product line covers a wide range of application scenarios and technical requirements. According to the search results, its core series can be summarized as follows:
1、 Surface Mount (SMD) Fuse Series
Disposable patch fuse
Nano ² series: such as 415 series (with a breaking current of 1500A at 277V, suitable for high voltage and high wave environments), 0443, 0448 series (flat package, suitable for consumer electronics and industrial systems).
Thin film patch fuses: including series 0429, 0430, 0431, etc., adapted to micro circuit boards with ultra-thin design.
Universal SMD series: packaged in imperial sizes such as 0603, 0805, 1206, etc., to meet different current and space requirements.
Self healing fuse (PPTC)
Surface mount type: divided into 0603L, 0805L, 1206L and other series according to size, suitable for consumer electronics and communication port protection.
Plug in type: such as 16R (16V), 30R (30V), 250R (250V) series, with voltage resistance values distinguishing different application scenarios.
Dedicated for battery protection: such as LR and LT series, designed specifically for rechargeable batteries to prevent overcharging and short circuits.
2、 Axial/radial and through-hole fuse series
PICO series: ultra small axial fuse, suitable for traditional circuit design and high-density installation environment.
HVAC series: designed specifically for HVAC systems, resistant to high temperatures and high current surges.
Tubular fuses: such as 607 series (500V AC/DC, 40A63A), 835 series (high surge resistance, 1.5kA breaking).
3、 Automotive and Industrial Special Series
Car fuse
Insert type and bolt type: such as 089107.5NXT (7.5A) series, covering the aftermarket of passenger and commercial vehicles.
High voltage SMD fuses: such as the 823A series (certified by AECQ200 and supporting 1000V DC systems).
Industrial power fuse
LDC series: 600V AC/DC universal type, suitable for high-voltage scenarios such as UPS and rail transit.
KLKD series: tubular high-voltage fuse, specially designed for new energy equipment such as solar inverters.
4、 Special Features and High Reliability Series
Military fuses: designed specifically for aviation and military equipment that meets strict environmental standards, such as the LA series high reliability varistors.
Environmentally friendly fuses: compliant with RoHS and lead-free standards, such as the 501 series ceramic fuses (operating temperature 55 ° C to 150 ° C).
Delay type fuses, such as the 835 series, optimize surge protection for devices such as LED TVs and digital signage.
5、 Micro and ultra-low power series
Plastic encapsulated micro fuses: such as the 392 (square) and 382 (circular) series, suitable for space limited scenarios such as smart wearable devices and medical instruments.
Ultra low power PPTC: such as Lo ρ series, with extremely low resistance during normal operation, suitable for precision electronic circuits.
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 reflected in high wave tolerance, self recovery function, and compact design, such as the high breaking capacity of Nano ² 415 series and the automatic reset feature of PPTC. Specific selection should be based on parameters such as voltage, current, and environmental requirements. For more model information, please refer to official materials or technical documents provided by authorized dealers.