MF-S175SS-0

Resistance - Initial (Ri) (Min):	50 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.039" (1.00mm)
Height - Seated (Max):	--
Size / Dimension:	0.866" L x 0.199" W (22.00mm x 5.05mm)
Package / Case:	Strap
Mounting Type:	User Defined
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	120 mOhms
Series:	Multifuse®, MF-S
Time to Trip:	4s
Current - Trip (It):	3.8A
Current - Hold (Ih) (Max):	1.75A
Current - Max:	100A
Voltage - Max:	15V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses: MF-S175SS-0 Application Field and Working Principle

PTC resettable fuses, also known as polymeric positive temperature coefficient (PPTC) fuses, are a type of self-resetting fuse that provides resettable protection from short circuit and overloads. The MF-S175SS-0 is a one time over-current protection device (OCPD). The MF-S175SS-0 has a rated current of 175mA and an extended hold current of 37mA with 400Vac maximum working voltage.The Most Popular Application FieldsPTC resettable fuses have a wide variety of applications, and are most commonly used in the following areas:1. Automotive industry:Other common uses of PTC resettable fuses can be found in the automotive industry. PTCs protect drivers and passengers from electric shock hazards by providing overcurrent and short-circuit protection in various vehicles, including electric and hybrid cars.2. Computer and consumer electronics:PTC resettable fuses are also used in computer and consumer electronics, such as routers, laptops, and smart phones. These fuses are used to protect these devices from short-circuits, over-currents, and over-loads, as well as providing reliable data communication.3. Medical industry:In the medical industry, PTC resettable fuses are used in a variety of medical devices. These include implantable medical devices, surgical instruments, medical imaging machines, oxygen concentrators, and other medical devices.4. LED lighting:PTC resettable fuses are often used in LED lighting systems to protect against short-circuit and over-current events. The use of PTC resettable fuses in LED lighting systems is beneficial because they typically have a low temperature coefficient, making them less susceptible to thermal runaways.The Working Principle of the MF-S175SS-0The working principle of the MF-S175SS-0 involves a complex thermodynamic phenomenon. When an over-current flows in the circuit, it heats up the MF-S175SS-0 PTC resettable fuse, which becomes a conductor at a certain temperature. When this happens, the current is diverted away from the protected circuit and the over-current is dissipated as heat, causing the PTC to cool down.Once the PTC has cooled, it will become a non-conductor again and the current will be re-directed to the protected load. This cycle can be repeated until the over-current event has been resolved. This makes the MF-S175SS-0 an ideal solution for short-term current-limiting protection.ConclusionThe MF-S175SS-0 PTC resettable fuse is one of the most popular types of PTC resettable fuses with a wide range of applications. With a maximum working voltage of 400Vac and a rated current of 175mA, the MF-S175SS-0 is a reliable device for short-term current-limiting protection from short-circuits, over-loads, and over-currents in a variety of automotive, computer and consumer electronics, medical, and LED lighting applications.

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