AGRF1100

Resistance - Initial (Ri) (Min):	3.3 mOhms
Approvals:	--
Lead Spacing:	0.199" (5.05mm)
Thickness (Max):	--
Height - Seated (Max):	1.043" (26.50mm)
Size / Dimension:	0.689" L x 0.118" W (17.50mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	AEC-Q200
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	8.9 mOhms
Series:	PolySwitch®, AGRF
Time to Trip:	7.5s
Current - Trip (It):	20.3A
Current - Hold (Ih) (Max):	11A
Current - Max:	100A
Voltage - Max:	16V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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PTC Resettable Fuses

PTC resettable fuses are a type of overcurrent and overtemperature protection element that can be reset after tripping off due to an overload or short circuit. They are usually connected in series with the load and form part of the electrical circuit to prevent it from over-heating and burning out. The AGRF1100 is a popular resettable fuse that has been used in many applications for over 50 years.

What is AGRF1100?

AGRF1100 is a polymeric Positive Temperature Coefficient (PTC) resettable fuse. It is self-resettable and eliminates the need for replacing the fuse every time it trips off. The AGRF1100 resettable fuse is a rugged device, offering reliable overcurrent and overtemperature protection and circuit resumption in a single user-friendly package. It is also capable of operation up to +90°C and -40°C ambient temperatures.

Application Fields and Working Principle

The AGRF1100 resettable fuse has been commonly used in protection applications for both consumer and industrial products. These include computers, consumer electronics, dot matrix printers, smoke detectors, microwave ovens, and many more. It is also suitable for use in automotive applications, such as automotive electrical systems, bus air conditioning systems, and lighting systems.The AGRF1100 operates on the principle of a PTC thermistor. In normal operation, the device is in a “high-impedance” state, and will act as an open circuit allowing electricity to flow without interruption. When a short circuit or an overload occurs, the device will heat up due to the large current flowing through it. Once the temperature reaches its trip point, it will switch into a “low-impedance” state, and the device will become an effective short circuit, drawing the voltage of the system down. This will cause the overcurrent to be interrupted, and the device to trip off.Once the overload or short circuit has been removed, the device will cool down and return to its original state. The device can then be reset and the system can be re-energized. In most applications, the AGRF1100 requires a manual reset after the fault has been cleared. This will ensure that the device will not unintentionally trip off again due to the same fault condition.

Conclusion

The AGRF1100 is a robust resettable fuse which provides effective overcurrent and overtemperature protection in a single package. It has been used in a wide range of applications for over 50 years, and is capable of operation in harsh environmental conditions. The device operates on the principle of a PTC thermistor, allowing it to trip off in the event of an overcurrent or short circuit. It is easily reset after tripping, and is often used in series with the load to protect it from damage.

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