MF-S175S

Resistance - Initial (Ri) (Min):	50 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.039" (1.00mm)
Height - Seated (Max):	--
Size / Dimension:	0.827" L x 0.199" W (21.00mm 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Part Status:	Obsolete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

PTC resettable fuses are commonly used in many consumer and industrial applications that require overcurrent protection. They offer the same level of protection as a traditional fuse, but with the added benefit of being resetable, without the need to be replaced. The MF-S175S is one of the most popular models of PTC resettable fuses, and it has a variety of applications and working principles.

Application Fields

The MF-S175S is primarily used in electronic appliances and consumer power supplies, as well as automotive and industrial control systems. It is designed to protect circuits from high currents which can be caused by short circuits, electrical surges and overcurrent conditions. The MF-S175S is also popular in portable devices and USB charging applications, where its resetable nature is highly advantageous.In addition to these consumer and industrial applications, the MF-S175S is also used in medical devices, robots and automation systems. In these applications it is used to protect and monitor the power supply of the device, ensuring it is working correctly and safely. It is highly reliable and is able to detect high currents before damage is done.

Working Principle

The working principle of the MF-S175S is based on the idea of using a Positive Temperature Coefficient (PTC) device to detect overcurrents. When the current going through it exceeds the designed threshold, the device will heat up and increase the resistance. This creates a voltage drop, which consequently reduces the current flowing through it. As the current drops, the device will cool down again and reset, allowing the circuit to continue functioning.This resetable mechanism allows the device to be used in many different applications. It can act as a simple current limiter or it can monitor the current and provide feedback. This can be used to prevent circuit damage and overvoltage situations. The main advantages of the MF-S175S PTC resettable fuse are its resetable nature, its accuracy and reliability, and its ability to detect and prevent dangerous overcurrent conditions. This makes it an ideal choice for a variety of consumer and industrial applications.

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