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:
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 0805L Series PTC provides surface mount overcurrent
protection for applications where space is at a premium and resettable protection is desired. Features:Lead-free and Halogen-freeFast response to fault currentsCompact design saves board spaceLow resistanceLow-profileCompatible with high temperature ...
Description:
From TE Connectivity, these SMD and SMD 2
Series surface mount Polyswitches are compact and suitable for a variety of computer and electronics applications. SMT footprints:• SMD - Hold current 0.3 - 1.25A: 7555 (metric) 2920 (Imperial)• SMD2 - Hold ...
Description:
Resettable fuses are designed for the protection of
electrical and electronic circuits against excessive currents. They switch rapidly from a low resistance to very high resistance state under electrical overload or short circuit conditions, and feature automatic reset and return ...
