2 W Non-linear Resistors 149

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Part	Manufacturer	Resistor Type	Mounting Type	Resistance	Rated Power Dissipation (P)	Maximum Operating Temperature	Thermistor Application	Terminal Placement	Shape (Package)	Packing Method	No. of Terminals	Rated AC Voltage (URac)	Terminal Shape	Minimum Operating Temperature	Terminal Finish	Manufacturer Series	Additional Features	JESD-609 Code
LVR040K-1	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT		2 W	85 Cel	TEMPERATURE SENSING	RADIAL	RECTANGULAR PACKAGE	BULK	2	240 V	WIRE		TIN	LVR	RESISTANCE RANGE(MIN-MAX): 0.6-0.97	e3
LVR040K-AP	Littelfuse	PTC THERMISTOR	THROUGH HOLE MOUNT		2 W		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2	240 V	WIRE		TIN	LVR	RESISTANCE VARIES FROM 0.60 TO 0.97	e3
RF2768-000	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	.08 ohm	2 W	85 Cel	TEMPERATURE SENSING	RADIAL	RECTANGULAR PACKAGE	TR, 15 INCH	2	30 V	WIRE	-40 Cel			RESISTANCE RANGE(MIN-MAX): 0.020-0.050
RF2775-000	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	.08 ohm	2 W	85 Cel	TEMPERATURE SENSING	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2	30 V	WIRE	-40 Cel			RESISTANCE RANGE(MIN-MAX): 0.020-0.050
RF1545-000	Littelfuse	PTC THERMISTOR	SURFACE MOUNT		2 W	85 Cel	TEMPERATURE SENSING	AXIAL	RECTANGULAR PACKAGE	BULK	2		FLAT	-40 Cel			0.009 TO 0.016 OHMS AT 20 DEG CEL

Non-linear Resistors

Non-linear resistors, also known as varistors or voltage-dependent resistors, are electronic components that exhibit a nonlinear resistance characteristic with respect to the applied voltage. They are primarily used for voltage clamping, surge protection, and transient suppression in electronic circuits.

The resistance of a varistor decreases with an increase in voltage, allowing it to provide a low resistance path for transient currents that exceed a specified threshold. When the voltage level drops below the threshold, the resistance increases, returning the varistor to its high impedance state. This property makes them useful for protecting sensitive electronic components from voltage surges and spikes.

Varistors are available in two types: metal oxide varistors (MOVs) and silicon carbide varistors (SiCVs). MOVs are the most common type, and they can handle a wider range of voltages than SiCVs. SiCVs, on the other hand, can handle higher temperatures and are more suitable for high power applications.

Non-linear resistors are widely used in power supplies, surge protectors, electronic ballasts, motor control circuits, and telecommunication systems. They are available in various package types, including through-hole, surface mount, and radial leaded packages.