.125 W Fixed Resistors 2,400+

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Part	Manufacturer	Resistor Type	Mounting Type	Resistance	Rated Power Dissipation (P)	Maximum Operating Temperature	Tolerance	Diameter (Lead)	Rated Temperature	Technology	Shape (Package)	Construction	Packing Method	Size Code	No. of Terminals	Package Style (Meter)	Terminal Shape	Sub-Category	Dimensions	Minimum Operating Temperature	Temperature Coef (ppm/Cel)	Terminal Finish	Length (Lead)	Height (Package)	Operating Voltage	Additional Features	Length (Package)	JESD-609 Code	Diameter (Package)	Reference Standard	Width (Package)
CRGP0402F1K5	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	1500 ohm	.125 W	155 Cel	1 %		70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	0402	2	SMT	WRAPAROUND		1mm x .5mm x .35mm	-55 Cel	100			.35 mm	50 V		1.1 mm			AEC-Q200	.5 mm
ERA6AEB4990V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	499 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERA6AEB49R9V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	49.9 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERA6AEB682V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	6800 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6ENF6342V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	63400 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	PRECISION, STANDARD: IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6GEYJ7R5V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	7.5 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	-100,600	MATTE TIN OVER NICKEL		.6 mm	150 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJS06F1651V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	1650 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	ANTI-SULFUR, IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
RC0805FR-0751KL	Yageo	FIXED RESISTOR	SURFACE MOUNT	51000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
RC0805FR-0771K5L	Yageo	FIXED RESISTOR	SURFACE MOUNT	71500 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
RC0805JR-070RP	Yageo	JUMPER	SURFACE MOUNT	0 ohm	.125 W	155 Cel			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel		MATTE TIN OVER NICKEL		.5 mm		LASER TRIMMABLE, RATED CURRENT: 2A	2 mm	e3			1.25 mm
RC2012J103CS	Samsung Electro-mechanics	FIXED RESISTOR	SURFACE MOUNT	10000 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, Paper, 7 Inch	0805	2	SMT	WRAPAROUND	FIXED RESISTOR		-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.55 mm	150 V		2 mm	e3			1.25 mm
RE0805DRE0710KL	Yageo	FIXED RESISTOR	SURFACE MOUNT	10000 ohm	.125 W	155 Cel	.5 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	50	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE, ULTRA PRECISION	2 mm	e3			1.25 mm
RG2012N-2323-D-T5	Susumu	FIXED RESISTOR	SURFACE MOUNT	232000 ohm	.125 W	155 Cel	.5 %		85 Cel	THIN FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	10	MATTE TIN OVER NICKEL		.4 mm	150 V	ANTI-SULFUR, HIGH PRECISION	2 mm	e3		AEC-Q200	1.25 mm
RMCF0805JT10M0	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	10000000 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	200	MATTE TIN OVER NICKEL		.5 mm	150 V		2 mm	e3		AEC-Q200	1.25 mm
RN55D1002FBSL	Vishay Intertechnology	FIXED RESISTOR	THROUGH HOLE MOUNT	10000 ohm	.125 W	175 Cel	1 %	.64 mm	70 Cel	METAL FILM		Tubular	BULK		2	Axial	WIRE			-65 Cel	100	Tin/Lead (Sn/Pb)	38.1 mm		200 V	FLAME-PROOF	6.1 mm	e0	2.29 mm	MIL-R-10509
RN55D1002FRSL	Vishay Intertechnology	FIXED RESISTOR	THROUGH HOLE MOUNT	10000 ohm	.125 W	175 Cel	1 %	.64 mm	70 Cel	METAL FILM		Tubular	TR, 7.5 INCH		2	Axial	WIRE			-65 Cel	100	Tin/Lead (Sn/Pb)			200 V	FLAME-PROOF	6.1 mm	e0	2.29 mm	MIL-R-10509
RNCF1206BTT50R0	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	50 ohm	.125 W	155 Cel	.1 %		70 Cel	THIN FILM	RECTANGULAR PACKAGE		TR, PAPER, 7 INCH	1206	2		WRAPAROUND			-55 Cel	10	Matte Tin (Sn) - with Nickel (Ni) barrier			150 V			e3
RP73D2A4R99BTDF	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	4.99 ohm	.125 W	155 Cel	.1 %		70 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR	0805	2	SMT	WRAPAROUND		2mm x 1.25mm x .55mm	-55 Cel	15	MATTE TIN OVER NICKEL		.55 mm	150 V	PRECISION	2 mm	e3			1.25 mm
WCR0805-390RFI	Tt Electronics Plc	FIXED RESISTOR	SURFACE MOUNT	390 ohm	.125 W	125 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.55 mm	150 V		2 mm	e3			1.25 mm
WR08X7500FTL	Walsin Technology	FIXED RESISTOR	SURFACE MOUNT	750 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE; RATED AC VOLTAGE (V): 150	2 mm	e3			1.25 mm
CR0805-JW-222ELF	Bourns	FIXED RESISTOR	SURFACE MOUNT	2200 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, Paper, 7 Inch	0805	2	SMT	WRAPAROUND			-55 Cel	200	MATTE TIN OVER NICKEL		.5 mm	150 V		2 mm	e3			1.25 mm
CRCW0805402RFKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	402 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRCW080547R0FKEAC	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	47 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.5 mm	150 V	RATED AC COLTAGE(V): 150	2 mm	e3			1.25 mm
CRCW08056K20FKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	6200 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRG0805F16K	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	16000 ohm	.125 W	155 Cel	1 %		70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	0805	2	SMT	WRAPAROUND		2mm x 1.25mm x .55mm	-55 Cel	100	MATTE TIN OVER NICKEL		.55 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
CRG0805F220K	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	220000 ohm	.125 W	155 Cel	1 %		70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	0805	2	SMT	WRAPAROUND		2mm x 1.25mm x .55mm	-55 Cel	100	MATTE TIN OVER NICKEL		.55 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
CRG0805F390K	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	390000 ohm	.125 W	155 Cel	1 %		70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	0805	2	SMT	WRAPAROUND		2mm x 1.25mm x .55mm	-55 Cel	100	MATTE TIN OVER NICKEL		.55 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
ERA6ARB752V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	7500 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	10	TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6ENF1103V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	PRECISION, STANDARD: IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6ENF3013V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	301000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	PRECISION, STANDARD: IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6ENF3241V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	3240 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	PRECISION, STANDARD: IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJ6ENF3402V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	34000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	150 V	PRECISION, STANDARD: IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
RK73B1JTTD270J	Koa Speer Electronics	FIXED RESISTOR	SURFACE MOUNT	27 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	200	MATTE TIN OVER NICKEL		.45 mm	75 V	IEC60115-8	1.6 mm	e3		AEC-Q200	.8 mm
RLR05C7R50FSB14	Vishay Intertechnology	FIXED RESISTOR	THROUGH HOLE MOUNT	7.5 ohm	.125 W	150 Cel	1 %	.41 mm	70 Cel	METAL FILM		Tubular	BULK		2	Axial	WIRE			-65 Cel	100	Tin/Lead (Sn63Pb37)	31.75 mm		200 V		3.81 mm	e0	1.68 mm	MIL-PRF-39017
232273061222	Yageo	FIXED RESISTOR	SURFACE MOUNT	2200 ohm	.125 W	155 Cel	5 %		70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Chip	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND	Fixed Resistors		-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
AR0805FR-0710RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	10 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, Paper, 7 Inch	0805	2	SMT	WRAPAROUND			-55 Cel	200	Nickel/Gold (Ni/Au)		.5 mm	150 V	LASER TRIMMABLE	2 mm	e4			1.25 mm
CR0805-FX-3300ELF	Bourns	FIXED RESISTOR	SURFACE MOUNT	330 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, Paper, 7 Inch	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.5 mm	150 V		2 mm	e3			1.25 mm
CRCW0805100KFKTC	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	100000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 13 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	TIN LEAD OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V):150	2 mm	e0		AEC-Q200	1.25 mm
CRCW080516K9FKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	16900 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRCW080524K0FKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	24000 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRCW0805475RFKEB	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	475 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 11.25 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRCW080551R0FKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	51 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 150	2 mm	e3		AEC-Q200	1.25 mm
CRGCQ0805J4R7	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	4.7 ohm	.125 W	155 Cel	5 %		70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	0805	2	SMT	WRAPAROUND		2mm x 1.25mm x .55mm	-55 Cel	400			.55 mm	150 V		2 mm			AEC-Q200	1.25 mm
ERA6AEB2611V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	2610 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERA6AEB473V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	47000 ohm	.125 W	155 Cel	.1 %		85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.5 mm	100 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
PTF56100R00AZBF	Vishay Intertechnology	FIXED RESISTOR	THROUGH HOLE MOUNT	100 ohm	.125 W	150 Cel	.05 %	.64 mm	85 Cel	METAL FILM	TUBULAR PACKAGE	Tubular	Bulk		2	Axial	WIRE	Fixed Resistors		-55 Cel	5	Tin/Lead (Sn/Pb)	38.1 mm		300 V		6.35 mm	e0	2.31 mm
RC0805FR-0720RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	20 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm
RC0805FR-07301RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	301 ohm	.125 W	155 Cel	1 %		70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	LASER TRIMMABLE	2 mm	e3			1.25 mm

Fixed Resistors

Fixed resistors are passive electronic components that are used to resist the flow of electric current in a circuit. They have a fixed value of resistance, meaning their resistance cannot be adjusted once they are manufactured. They are commonly used to set the bias of transistors, control the gain of amplifiers, or limit the current flowing through an LED. Fixed resistors come in various sizes, power ratings, and tolerances.

There are two types of fixed resistors: through-hole and surface mount. Through-hole resistors have leads that are inserted into holes on the printed circuit board (PCB), while surface mount resistors have terminals that are soldered directly to the surface of the PCB. Through-hole resistors are larger and easier to work with, but surface mount resistors are smaller and more suitable for miniaturized electronic devices.

Fixed resistors can be made from a variety of materials, including carbon, metal, and wire-wound. Carbon resistors are inexpensive and widely used, but they have a lower tolerance and are more susceptible to noise than other types. Metal film resistors have a higher tolerance and better stability, making them ideal for use in precision circuits. Wire-wound resistors have a higher power rating and are used in high power applications, such as power supplies and amplifiers.