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:
The 2920L series device provides surface mount overcurrent
protection for medium voltage (≤60V) applications where resettable protection is desired. FeaturesLead-freeFast response to fault currentsHigh voltageLow ProfileCompatible with high temperature solders.
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 ...
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 ...
Description:
The Littelfuse 2920L series PTC provides surface mount
overcurrent protection for applications where space is at a premium and resettable protection is desired. Maintenance free automatic reset for thousands of cyclesSmall size and no fuseholder required.
