NANOSMDC020F-2 Circuit Protection

Series:	PolySwitch®, nanoSMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	24V
Current - Max:	100A
Current - Hold (Ih) (Max):	200mA
Current - Trip (It):	420mA
Time to Trip:	100ms
Resistance - Initial (Ri) (Min):	650 mOhms
Resistance - Post Trip (R1) (Max):	3.1 Ohms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	1206 (3216 Metric), Concave
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.59mm)
Height - Seated (Max):	--
Thickness (Max):	0.028" (0.70mm)
Lead Spacing:	--
Approvals:	CSA, TUV, UL

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Introduction:

PTC Resettable Fuses are systems designed to protect electronic components from over current or over heating. NANOSMDC020F-2 is one example of such a system. This system is commonly used in areas where high currents are expected, such as automotive applications, medical devices, and even in communications systems.

Application Field:

NANOSMDC020F-2 is primarily used in automotive and mobile-electronic applications. It is also suitable for audio and video equipment, computers, and other electrical systems requiring reliable overload protection. Additionally, it can be used in power converters, loadshedding, and electric vehicles.

Operation Principle:

The NANOSMDC020F-2 operates by using a metallic construction to allow for a current defined trip-point. It relies on a positive temperature coefficient (PTC) that reacts to thermalization whenever the maximum current rating is exceeded. This triggers the PTC thermistor to enter a high-resistance state, which limits current flow and thus reduces heat. In addition, the PTC resettable fuse releases the stored energy in the form of low-level pulses which reset the thermistor to a low resistance state. This allows current to flow through the fuse again and ensures that the electronic component is protected against overcurrent and overheating.

Advantages:

NANOSMDC020F-2 provides several advantages compared to alternative solutions such as Fuses, FUSETRAPs, and other Resettable Fuses. One of the most prominent is its fast response time. This ensures that the system quickly acts to prevent overheating and other potential damages. Additionally, the low resistance state of the PTC thermistor implies lower heating of other components. Its small size and light weight are also points in its favor, allowing for easier integration and portability.

Conclusion:

NANOSMDC020F-2 is a PTC resettable fuse primarily used in automotive and mobile electronics applications. By using a metallic construction to create a defined trip-point, it uses a PTC thermistor that reacts to thermalization and limits current when maximum current rating is exceeded. In addition, the PTC resettable fuse releases low-level energy pulses which reset the thermistor. This ensures that it is optimal for overload protection for a variety of applications. It also offers advantages such as fast response times, low resistance, small size, and light weight.

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