MF-USMD010-2 Circuit Protection

Resistance - Initial (Ri) (Min):	800 mOhms
Approvals:	CSA, TUV, UR
Lead Spacing:	--
Thickness (Max):	0.033" (0.85mm)
Height - Seated (Max):	--
Size / Dimension:	0.127" L x 0.102" W (3.22mm x 2.58mm)
Package / Case:	1210 (3225 Metric)
Mounting Type:	Surface Mount
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	15 Ohms
Series:	Multifuse®, MF-USMD
Time to Trip:	600ms
Current - Trip (It):	300mA
Current - Hold (Ih) (Max):	100mA
Current - Max:	10A
Voltage - Max:	30V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses: MF-USMD010-2 Application Field and Working Principle

PTC Resettable Fuses are electrical components used in various types of electronic circuits and equipment to protect against electrical or thermal overloads. In an especially designed to prevent current overloads, PTC resettable fuse is an integral part of a protective system to safeguard against the possibility of critical current spikes and surges. Named as MF-USMD010-2, this particular PTC Resettable Fuse is primarily used in applications ranging from DC motors, AC motors, AC adapters, laptop power supplies, and other various types of electrical power systems. Equipped with an advanced integrated electrical current limitation function, the MF-USMD010-2 helps to ensure the safety of electrical components and circuits, thus preventing damage from over-current and over-heating. The working principle of the MF-USMD010-2 is based on basic physics and electrical engineering principles. It is able to maintain the thermal stability of its components, which allows for effective protection from surge and over-current protection. Its internal construction is composed of two metal plates (the first being the base plate and the second being the top plate). These two plates are connected via a metallic center conductor. When a PTC Resettable Fuse is activated, the center conductor and the two metal plates become charged with electrical current. This current then triggers a long-term resistance response, where the PTC Resettable Fuse takes on a relatively high resistance value. Since this resistance value remains at its highest for a period of time, the current is forced to slow down and it becomes impossible for electrical surges that can cause damage to occur. When the resistance drops, the temperature quickly follows suit and the current is returned to its initial value.The MF-USMD010-2 PTC Resettable Fuses has been successfully tested in both DC and AC applications. In DC applications, the fuse acts to limit the current and voltage before the electrical components become permanently damaged. For AC applications, it is able to prevent large inrush current, voltage surges and to limit system power to a safe and manageable level. Furthermore, it is able to provide effective protection in a broad range of temperatures (-40°C to +105°C) and can withstand a maximum input voltage of 250Volts.In addition, the MF-USMD010-2 is designed with copper plated zinc core and a copper alloy case. This combination of materials not only makes it strong and durable, but also provides an excellent electrical capacitance and a maximum heat dissipation rate of up to 62°C/W. Moreover, it is able to reset it automatically without requiring any turning off and on of the system.Overall, the MF-USMD010-2 PTC Resettable Fuse is an excellent product that offers advanced protection against both over-current and over-voltage. Its durable construction and ability to maintain a maximum heat dissipation rate make it a great choice for a variety of electrical applications. Moreover, its built-in resetting system allows it to automatically reset and restore electrical components, thereby further enhancing its usefulness in a wide range of applications.

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