4 ohm Non-linear Resistors 31

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Part	Manufacturer	Resistor Type	Mounting Type	Resistance	Rated Power Dissipation (P)	Maximum Operating Temperature	Rated Temperature	Thermistor Application	Terminal Placement	Shape (Package)	Packing Method	No. of Terminals	Package Style (Meter)	Rated AC Voltage (URac)	Terminal Shape	Sub-Category	Dimensions	Minimum Operating Temperature	Terminal Finish	Height (Package)	Manufacturer Series	Maximum Circuit RMS Voltage	Operating Voltage	Additional Features	Length (Package)	JESD-609 Code	Reference Standard	Width (Package)	Maximum Circuit DC Voltage
TRF250-180	TE Connectivity	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm	1.5 W	85 Cel		TEMPERATURE SENSING	RADIAL	DISK PACKAGE	BULK; TR	2		100 V	WIRE	Non-linear Resistors	9mm x 3.8mm x 12mm	-40 Cel	Tin (Sn)	12 mm	TRF250		100 V	RESISTANCE RANGE(MIN-MAX): 0.8-2.2	9 mm	e3	CSA, TUV, UL	3.8 mm
TRF250-180-2	TE Connectivity	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm	1.5 W	85 Cel		TEMPERATURE SENSING	RADIAL	DISK PACKAGE	BULK; TR	2		100 V	WIRE	Non-linear Resistors	9mm x 3.8mm x 12mm	-40 Cel		12 mm	TRF250		100 V	RESISTANCE RANGE(MIN-MAX): 0.8-2.2	9 mm	e3	CSA, TUV, UL	3.8 mm
0603L004YR	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED		TR, 7 INCH	2	SMT		WRAPAROUND			-40 Cel	MATTE TIN	.75 mm			24 V		1.8 mm	e3	CUL; TUV; UL	1 mm	24 V
250R120U	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2	Radial	250 V	WIRE	Non-linear Resistors		-40 Cel	Matte Tin (Sn)	11 mm		250 V	60 V		6.8 mm	e3	CUL; TUV; UL	4.6 mm
250S130DR	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel			DUAL ENDED	RECTANGULAR PACKAGE	TR, 13 INCH	2	SMT	250 V	FLAT			-40 Cel		3.7 mm			60 V		9.4 mm		CUL; TUV; UL	7.4 mm
0603L004YR-A	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED		TR, 7 INCH	2	SMT		WRAPAROUND			-40 Cel	Matte Tin (Sn)	.75 mm			24 V		1.8 mm	e3	CUL, TUV, UL	1 mm	24 V
600R160UR	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2	Radial		WIRE	Non-linear Resistors		-40 Cel	TIN	12.6 mm			60 V		16 mm	e3	CUL; TUV; UL	6 mm	60 V
250S130VZR	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel			DUAL ENDED		TR, 13 INCH	2	SMT		FLAT			-40 Cel	MATTE TIN	6.9 mm			60 V		6.1 mm	e3	CUL; TUV; UL	3.2 mm	60 V
MF-SM013/250V-2	Bourns	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED	RECTANGULAR PACKAGE	TR, 13 INCH	2	SMT		FLAT			-40 Cel	TIN	3.2 mm		250 V	60 V	RMIN AT 23 DEG CEL	7.4 mm	e3	CUL, TUV, UL	6.6 mm
232266455913	NXP Semiconductors	PTC THERMISTOR	THROUGH HOLE MOUNT	4 ohm				OVERLOAD PROTECTION				2		265 V	WIRE
232266445913	NXP Semiconductors	PTC THERMISTOR	SURFACE MOUNT	4 ohm				OVERLOAD PROTECTION				2		265 V	SPECIAL	Non-linear Resistors					2322664
232266465913	NXP Semiconductors	PTC THERMISTOR	THROUGH HOLE MOUNT	4 ohm				OVERLOAD PROTECTION				2		265 V	WIRE	Non-linear Resistors					2322664
600R160-R1F	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2		600 V	WIRE	Non-linear Resistors		-40 Cel	Tin (Sn)		600R			4 TO 17 OHMS MEASURED AT 20 DEG CEL		e3
600R160-RAF	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2		600 V	WIRE	Non-linear Resistors		-40 Cel	Tin (Sn)		600R			4 TO 16 OHMS MEASURED AT 20 DEG CEL		e3
600R160F	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2		600 V	WIRE	Non-linear Resistors		-40 Cel	Tin (Sn)		600R			4 TO 18 OHMS MEASURED AT 20 DEG CEL		e3
600R160-RAUR	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2		600 V	WIRE	Non-linear Resistors		-40 Cel	Tin (Sn)		600R			4 TO 16 OHMS MEASURED AT 20 DEG CEL		e3
TS600-200F-RA-B-0.5-2	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED	RECTANGULAR PACKAGE	TR, EMBOSSED, 13 INCH	2	SMT		WRAPAROUND			-40 Cel	Matte Tin (Sn)	12.3 mm			60 V		19.4 mm	e3	CSA; UL	8.3 mm	60 V
TRF600-160	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2	Radial		FLAT			-40 Cel	MATTE TIN	12.6 mm		600 V	250 V	RMAX:10 OHMS AT 20 DEG CEL	16 mm	e3	UL, CSA, TUV	6 mm
TRF600-160-RA	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	BULK	2	Radial		FLAT			-40 Cel		12.6 mm		600 V	250 V	RMAX:7 OHMS AT 20 DEG CEL	16 mm			6 mm
TS600-170F-2	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED	RECTANGULAR PACKAGE	TR, EMBOSSED, 13 INCH	2	SMT		WRAPAROUND			-40 Cel		12.3 mm			60 V		19.4 mm		CSA; UL	8.3 mm	60 V
TRF600-160-2	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	TR, 14 INCH	2	Radial		FLAT			-40 Cel	MATTE TIN	12.6 mm		600 V	250 V	RMAX:10 OHMS AT 20 DEG CEL	16 mm	e3	UL, CSA, TUV	6 mm
250R120ZR	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2	Radial	250 V	WIRE	Non-linear Resistors		-40 Cel	Matte Tin (Sn)	11 mm		250 V	60 V		6.8 mm	e3	CUL; TUV; UL	4.6 mm
600R160-R1UR	Littelfuse	PTC RESETTABLE FUSE	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERLOAD PROTECTION	RADIAL	RECTANGULAR PACKAGE	AMMO PACK	2		600 V	WIRE	Non-linear Resistors		-40 Cel	Tin (Sn)		600R			4 TO 17 OHMS MEASURED AT 20 DEG CEL		e3
TSM250-130F-2	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL IN-LINE		TR, EMBOSSED, 15 INCH	4	SMT		FLAT			-40 Cel		9 mm			60 V		8.9 mm		UL	8.6 mm	60 V
TRF250-120S-B-0.5	Littelfuse	PTC THERMISTOR	THROUGH HOLE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	RADIAL		BULK	2	Radial		WIRE			-40 Cel		10 mm			60 V	4 TO 16 OHMS AT 20 DEG CEL	6.5 mm		CSA; TUV; UL	4.6 mm
TSL250-130F-2	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED		TR, EMBOSSED, 13 INCH	2	SMT		FLAT			-40 Cel		3.7 mm			60 V		7.9 mm			5.3 mm	60 V
1812L014R	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel	85 Cel	OVERLOAD PROTECTION	DUAL	RECTANGULAR PACKAGE	TR	2			WRAPAROUND			-40 Cel	Matte Tin (Sn)							e3
SMD1812P014TS	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel	85 Cel	TEMPERATURE SENSING	DUAL	RECTANGULAR PACKAGE	TR, BLISTER, 7 INCH	2			WRAPAROUND	Non-linear Resistors		-55 Cel	TIN LEAD		SMD1812					e0
SMD1812P014TF	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel	85 Cel	TEMPERATURE SENSING	DUAL	RECTANGULAR PACKAGE	TR, BLISTER, 7 INCH	2			WRAPAROUND			-55 Cel	Tin (Sn)							e3
0603L004	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED	RECTANGULAR PACKAGE		2	SMT		WRAPAROUND			-40 Cel	Matte Tin (Sn)	.75 mm			24 V		1.8 mm	e3	CUL, TUV, UL	1 mm	24 V
0603L004-A	Littelfuse	PTC RESETTABLE FUSE	SURFACE MOUNT	4 ohm		85 Cel		OVERCURRENT PROTECTION	DUAL ENDED			2	SMT		WRAPAROUND			-40 Cel		.75 mm			24 V		1.8 mm		CUL, TUV, UL	1 mm	24 V

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.