MF-RHT650-AP

Resistance - Initial (Ri) (Min):	11 mOhms
Approvals:	--
Lead Spacing:	0.114" (2.90mm)
Thickness (Max):	--
Height - Seated (Max):	0.880" (22.20mm)
Size / Dimension:	0.500" L x 0.118" W (12.70mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	AEC-Q200
Operating Temperature:	-40°C ~ 125°C
Resistance - Post Trip (R1) (Max):	26 mOhms
Series:	Multifuse®, MF-RHT
Time to Trip:	5.5s
Current - Trip (It):	12A
Current - Hold (Ih) (Max):	6.5A
Current - Max:	100A
Voltage - Max:	16V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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PTC Resettable Fuses, commonly known as PPTCs, are electronic components designed to protect electronic circuits from current surges, overloads, and other types of electrical damage. They are typically regarded as a cost-effective alternative to traditional fuses, because they can be reset after an overcurrent incident, allowing the circuit to continue working normally. The MF-RHT650-AP is an example of a PTC resettable fuse, and it is designed to protect sensitive electronics from current surges in a variety of applications.

The MF-RHT650-AP is rated for currents ranging from 500mA to 650mA. It has an operating voltage of 5V, and its maximum breakdown voltage is 32V. It has a nominal operating temperature range of -40°C to 85°C. The MF-RHT650-AP is available in a variety of package types, making it ideal for applications in which board space is limited.

The MF-RHT650-AP is primarily used in applications requiring circuit protection from current surges or overloads, such as consumer electronics, telecommunications, automotive, industrial, and medical devices. It can also be used as a general-purpose overcurrent protector for various applications.

The working principle of the MF-RHT650-AP is based on the PTC thermistor design. In this design, a positive temperature coefficient thermistor (PPTC or "PTC thermistor") is used in combination with a resistor, placed in series with the load. The PPTC thermistor is designed such that it has a high positive temperature coefficient, meaning that its resistance will rapidly increase as the temperature of the device increases. This makes the thermistor a suitable choice for current-limiting devices, due to its rapid temperature increase.

When there is an overcurrent incident, the thermistor will quickly heat up, increasing its resistance. This process limits the current that passes through the device, protecting the circuit from further damage. Once the current is reduced, the thermistor will cool down, restoring the circuit to its original state.

The MF-RHT650-AP offers a variety of features that make it particularly effective in applications requiring circuit protection. It has excellent temperature stability, with a temperature coefficient that remains within 0.2% over its operating temperature range. It also offers an extremely fast response time, typically resetting within 10 milliseconds after an overcurrent incident. Additionally, it has a built-in self-test resistance, which makes it easier to verify the effective working of the device.

The MF-RHT650-AP is widely regarded as an effective and cost-efficient solution for applications requiring protection from current surges and overloads. Its robust design and fast response time make it suitable for a number of different applications, from consumer electronics to industrial and medical devices. In addition, its small size and wide range of package types make it an attractive choice for applications in which board space is limited or other design considerations must be taken into account.

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