Resettable surface mount fuses are a reusable type of circuit protection device that is able to be mounted onto printed circuit boards. They trip when the current gets too high, but will function again when conditions return to an acceptable level.
How do resettable surface mount fuses work?
Resettable surface mount fuses form part of the circuit on a PCB (printed circuit board), allowing electrical current to flow through them. When a fault such as overcurrent is detected in the circuit, they are tripped, forcing a break in the circuit which prevents electricity from continuing to flow. This prevents any damage to the circuit or attached devices. Unlike non-resettable surface mount fuses, they can be used over and over, as they will reconnect the circuit when conditions return to normal.
Types of resettable surface mount fuses
Resettable surface mount fuses have a number of characteristics that can vary between models, including terminal material, voltage rating and their operating temperature range. They also come in various different sizes.
Description:
Littelfuse 451 series of NANO2 surface mount fuses
are very small wire-in-air (WIA) square shape surface mount devices which are suitable for a variety of secondary side circuit over-current protection applications. Very fast actingSmall sizeLow temperature de-rating.
Description:
Cooper Bussmann SS-5 series time-delay subminiature fuses are
an ideal PCB fuse solution and can be used within a wide variety of applications. Time-delay, low breaking capacitySmall rectangular-leaded design minimizes PCB space.
Description:
TE PolySwitch miniSMD series surface-mount devices are an
effective circuit protection method for computer, consumer, multimedia, portable and automotive electronics applications. Halogen free Current ratings from 0.05 to 3A Voltage ratings from 6V computer and electronic applications to 60V telecom ...
Description:
The 0603L Series PTC provides surface mount overcurrent
protection for applications where space is at a premium and resettable protection is desired. Lead-free and Halogen-freeFast response to fault currentsCompact design saves board spaceLow resistanceLow-profileCompatible with high temperature ...
