2920L600/12MR

Resistance - Initial (Ri) (Min):	4 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.063" (1.60mm)
Height - Seated (Max):	--
Size / Dimension:	0.290" L x 0.202" W (7.36mm x 5.12mm)
Package / Case:	2920 (7351 Metric), Concave
Mounting Type:	Surface Mount
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	20 mOhms
Series:	POLY-FUSE®, 2920L
Time to Trip:	2s
Current - Trip (It):	12A
Current - Hold (Ih) (Max):	6A
Current - Max:	50A
Voltage - Max:	12V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses

PTC resettable fuses are electrical components that are used to prevent overheating or surges from damaging electronic devices and appliances. The 2920L600/12MR is a PTC resettable fuse typically used in DC circuit applications, designed to protect against overvoltage and short circuits. The 2920L600/12MR is a radial leaded, thermally protected, solid state device. It is designed to work in a variety of applications including automotive, power supplies, telecom, consumer electronics, solar & renewable energy, audio/video, and industrial. It has been tested and is rated for 600mA continuous current with a 12mR resistance level at 25° C ambient temperature.

Application Field

The 2920L600/12MR PTC resettable fuse can be used to prevent overloads and short circuits in equipment such as motor controllers, battery charging systems, DC motors, load dump protection circuits, dimmers, LED drivers, and more. It is also suitable for home applications such as air conditioners, washing machines, microwaves, and other appliances.

Working Principle

The 2920L600/12MR operates on a very simple principle. It has a PTC (positive temperature coefficient) element inside it. When the current reaches a certain level, the PTC element will heat up, reducing its resistance. This causes an increase in current, which in turn causes the PTC element to get even hotter, further reducing its resistance. This continues until the resistance reaches its maximum value, at which point the fuse is tripped and the circuit is opened.The fuse can then be reset and it will return to its normal condition. It is important to note that the PTC element has a limited number of allowances of being tripped before its lifespan is reduced. For this reason, short-circuit protection must be taken into account when designing a circuit with a PTC fuse such as the 2920L600/12MR.

Safety Considerations

When working with PTC resettable fuses, safety is of utmost importance. The 2920L600/12MR can become very hot when operating, and should not be touched while in use. Additionally, it is important to make sure the fuse is appropriate for the intended application and that it is rated for the desired current. Additionally, safety glasses should be worn when working with this fuse to protect against flying debris in the event of an overload or short circuit.

Conclusion

The 2920L600/12MR is a PTC resettable fuse that can be used to protect DC circuits against overloads and short circuits. It is an ideal solution for applications such as motor controllers, battery charging systems, and consumer electronics. Safety is of utmost importance when installing and working with PTC resettable fuses, and the 2920L600/12MR is no exception.

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