110 ohm Fixed Resistors 58

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Part	Manufacturer	Resistor Type	Mounting Type	Resistance	Rated Power Dissipation (P)	Maximum Operating Temperature	Tolerance	Diameter (Lead)	Spacing (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)
ERJ12SF1100U	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.75 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, EMBOSSED, 7 INCH	2010	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.6 mm	200 V	PRECISION, STANDARD: IEC60115-8	5 mm	e3		AEC-Q200	2.5 mm
3521110RFT	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	110 ohm	2 W	155 Cel	1 %			70 Cel	THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR	2512	2	SMT	WRAPAROUND	FIXED RESISTOR	6.35mm x 3.2mm x .55mm	-55 Cel	100	MATTE TIN OVER NICKEL		.55 mm	250 V		6.35 mm	e3		AEC-Q200	3.2 mm
RC0603FR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.45 mm	75 V	LASER TRIMMABLE	1.6 mm	e3			.8 mm
AF0805FR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.125 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.5 mm	150 V	ANTI-SULFUR, LASER TRIMMABLE	2 mm	e3		AEC-Q200	1.25 mm
CRCW0603110RFKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	75 V	LASER TRIMMABLE, RATED AC VOLTAGE (V): 75	1.55 mm	e3		AEC-Q200	.85 mm
RC1206FR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	1206	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.55 mm	200 V	LASER TRIMMABLE	3.1 mm	e3			1.6 mm
W21-110RJI	Tt Electronics Plc	FIXED RESISTOR	THROUGH HOLE MOUNT	110 ohm	3 W	200 Cel	5 %	.8 mm		25 Cel	WIRE WOUND	TUBULAR PACKAGE	Tubular	AMMO PACK		2	Axial	WIRE			-55 Cel	200	TIN SILVER COPPER OVER NICKEL			100 V		12.7 mm		5.6 mm
CRCW1206110RFKEAHP	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.75 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	1206	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.5 mm	200 V	RATED AC VOLTAGE: 200V	3.1 mm	e3		AEC-Q200	1.6 mm
ERJ3EKF1100V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	75 V	PRECISION, STANDARD: IEC60115-8	1.6 mm	e3		AEC-Q200	.8 mm
LR1F110R	TE Connectivity	FIXED RESISTOR	THROUGH HOLE MOUNT	110 ohm	.6 W	155 Cel	1 %	.55 mm		70 Cel	THIN FILM	TUBULAR PACKAGE	Tubular	AMMO PACK		2	Axial	WIRE	FIXED RESISTOR	6.2mm x 2.3mm	-55 Cel	50	TIN			350 V	PRECISION	6.2 mm	e3	2.3 mm
ERJ3GEYJ111V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 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
AP101110RJ100PPM	Ohmite Manufacturing	FIXED RESISTOR	THROUGH HOLE MOUNT	110 ohm	100 W	175 Cel	5 %		10.42 mm	25 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular			2	Radial	FLAT	FIXED RESISTOR		-65 Cel	100		15.75 mm	20.96 mm	700 V	NON-INDUCTIVE, FREE AIR POWER 3.5W	16.01 mm				5.21 mm
ERJ2GEJ111X	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	200	MATTE TIN OVER NICKEL		.35 mm	50 V	IEC60115-8	1 mm	e3		AEC-Q200	.5 mm
RC0402JR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.0625 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.35 mm	50 V	LASER TRIMMABLE	1 mm	e3			.5 mm
CRCW1206110RFKECHP	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.75 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 13 INCH	1206	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.5 mm	200 V	RATED AC VOLTAGE: 200V	3.1 mm	e3		AEC-Q200	1.6 mm
ERJ6GEYJ111V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 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	200	MATTE TIN OVER NICKEL		.6 mm	150 V	IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
MLFM1JTD110R	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	1 W	155 Cel	5 %			70 Cel	THIN FILM	CYLINDRICAL PACKAGE	Cylindrical	TR, Embossed Plastic, 7 Inch	2309	2	MELF	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier			350 V	ANTI-SULFUR; PRECISION	5.9 mm	e3	2.2 mm
MLFM25JTD110R	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.4 W	155 Cel	5 %			70 Cel	THIN FILM		Cylindrical	TR, Embossed Plastic, 7 Inch	1406	2	MELF	WRAPAROUND			-55 Cel	100	MATTE TIN			200 V	ANTI-SULFUR; PRECISION	3.5 mm	e3	1.4 mm
ERA3AEB111V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	.1 %			85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.45 mm	75 V	IEC60115-8	1.6 mm	e3		AEC-Q200	.8 mm
ERJP06F1100V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.5 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	400 V	HIGH PRECISION, IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
ERJPA3F1100V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W	155 Cel	1 %			105 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	150 V	HIGH PRECISION, IEC60115-8	1.6 mm	e3		AEC-Q200	.8 mm
MLF14JTD110R	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W	155 Cel	5 %			70 Cel	THIN FILM	CYLINDRICAL PACKAGE	Cylindrical	TR, Embossed Plastic, 7 Inch	1406	2	MELF	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL			200 V	ANTI-SULFUR; PRECISION	3.5 mm	e3	1.4 mm
MLFA1JTD110R	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	1 W	155 Cel	5 %			70 Cel	THIN FILM		Cylindrical	TR, Embossed Plastic, 7 Inch	2309	2	MELF	WRAPAROUND			-55 Cel	100	MATTE TIN			350 V	PRECISION	5.9 mm	e3	2.2 mm	AEC-Q200
MLFA25JTD110R	Stackpole Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.4 W	155 Cel	5 %			70 Cel	THIN FILM		Cylindrical	TR, Embossed Plastic, 7 Inch	1406	2	MELF	WRAPAROUND			-55 Cel	100	MATTE TIN			200 V	PRECISION	3.5 mm	e3	1.4 mm	AEC-Q200
MMA02040C1100FB300	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.4 W	155 Cel	1 %			70 Cel	THIN FILM		Cylindrical	TR, BLISTER, 7 INCH	1406	2	SMT	WRAPAROUND			-55 Cel	50	TIN OVER NICKEL			200 V	ANTI-SULFUR; LASER TRIMMABLE; RATED AC VOLTAGE (V): 200; STANDARD: CECC40401-803	3.6 mm	e3	1.4 mm	AEC-Q200
RG2012P-111-B-T5	Susumu	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.125 W	155 Cel	.1 %			85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.4 mm	150 V	ANTI-SULFUR, HIGH PRECISION	2 mm	e3		AEC-Q200	1.25 mm
ERJU06F1100V	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.125 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PUNCHED, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	TIN		.6 mm	150 V	ANTI-SULFUR, IEC60115-8	2 mm	e3		AEC-Q200	1.25 mm
MBA02040C1100FC100	Vishay Intertechnology	FIXED RESISTOR	THROUGH HOLE MOUNT	110 ohm	.25 W	125 Cel	1 %	.5 mm		70 Cel	METAL FILM		Tubular	AMMO PACK		2	Axial	WIRE			-55 Cel	50	MATTE TIN	29 mm		200 V	RATED AC VOLTAGE (V):200	3.6 mm	e3	1.6 mm	AEC-Q200
MCSR04X1100FTL	Multicomp Pro	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.0625 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	100			.35 mm	50 V	ANTI-SULFUR, LASER TRIMMABLE, RATED AC VOLTAGE (V): 50	1 mm			AEC-Q200	.5 mm
RC0402FR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.0625 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.35 mm	50 V	LASER TRIMMABLE	1 mm	e3			.5 mm
RK73H2ATTD1100F	Koa Speer Electronics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED PAPER, 7 INCH	0805	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.5 mm	150 V	PRECISION	2 mm	e3		AEC-Q200	1.25 mm
1623408-1	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W		1 %				THICK FILM	RECTANGULAR PACKAGE		TR	1206	2		WRAPAROUND		3.1mm x 1.55mm x .55mm		100				200 V
CRCW0603110RFKEAHP	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.33 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.45 mm	75 V	RATED AC VOLTAGE: 75V	1.6 mm	e3		AEC-Q200	.85 mm
CRCW1206110RFKTA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.25 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	1206	2	SMT	WRAPAROUND			-55 Cel	100	Tin/Lead (Sn/Pb)		.55 mm	200 V	LASER TRIMMABLE, RATED AC VOLTAGE (V) : 200	3.2 mm	e0		AEC-Q200	1.6 mm
RP73PF1J110RBTDF	TE Connectivity	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.166 W	155 Cel	.1 %			70 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR	0603	2	SMT	WRAPAROUND		1.55mm x .8mm x .45mm	-55 Cel	25	MATTE TIN OVER NICKEL		.45 mm	100 V	PRECISION	1.55 mm	e3			.8 mm
CRCW0805110RFKEA	Vishay Intertechnology	FIXED RESISTOR	SURFACE MOUNT	110 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
CR0402-FX-1100GLF	Bourns	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.063 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, Paper, 7 Inch	0402	2	SMT	WRAPAROUND			-55 Cel	100	MATTE TIN OVER NICKEL		.32 mm	50 V		1 mm	e3			.5 mm
RT0603DRD07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	.5 %			70 Cel	THIN FILM		Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	25	Matte Tin (Sn) - with Nickel (Ni) barrier		.45 mm	75 V	HIGH PRECISION, LASER TRIMMABLE	1.6 mm	e3			.8 mm
ERA2AEB111X	Panasonic	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.063 W	155 Cel	.1 %			85 Cel	THIN FILM	RECTANGULAR PACKAGE	Rectangular	TR, PUNCHED, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	25	MATTE TIN OVER NICKEL		.35 mm	50 V	IEC60115-8	1 mm	e3		AEC-Q200	.5 mm
RC0805JR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.125 W	155 Cel	5 %			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
AC0402FR-07110RL	Yageo	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.0625 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM		Rectangular	TR, PAPER, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.32 mm	50 V	LASER TRIMMABLE	1 mm	e3		AEC-Q200	.5 mm
MCR03EZPJ111	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND	FIXED RESISTOR		-55 Cel	200	TIN OVER NICKEL		.45 mm	50 V		1.6 mm	e3			.8 mm
MCR50JZHJ111	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.5 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, EMBOSSED, 7 INCH	2010	2	SMT	WRAPAROUND	FIXED RESISTOR		-55 Cel	200	Tin (Sn) - with Nickel (Ni) barrier		.55 mm	200 V		5 mm	e3			2.5 mm
LTR18EZPJ111	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.75 W	155 Cel	5 %			70 Cel	THICK FILM		Rectangular	TR, Paper, 7 Inch	0612	2	SMT	WRAPAROUND			-55 Cel	200	TIN OVER NICKEL		.55 mm	200 V		3.2 mm	e3		AEC-Q200	1.6 mm
MCR01MZPF1100	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.063 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0402	2	SMT	WRAPAROUND			-55 Cel	100	TIN OVER NICKEL		.35 mm	50 V		1 mm	e3			.5 mm
ESR10EZPJ111	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.4 W	155 Cel	5 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Chip	TR, PAPER, 7 INCH	0805	2	SMT	WRAPAROUND	FIXED RESISTOR		-55 Cel	200	TIN OVER NICKEL		.55 mm	150 V	LASER TRIMMABLE, STANDARD: TS 16949	2 mm	e3		AEC-Q200	1.25 mm
MCR03EZPFX1100	ROHM	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, PAPER, 7 INCH	0603	2	SMT	WRAPAROUND			-55 Cel	100	TIN OVER NICKEL		.45 mm	50 V		1.6 mm	e3			.8 mm
RC1608F111CS	Samsung Electro-mechanics	FIXED RESISTOR	SURFACE MOUNT	110 ohm	.1 W	155 Cel	1 %			70 Cel	METAL GLAZE/THICK FILM	RECTANGULAR PACKAGE	Rectangular	TR, Paper, 7 Inch	0603	2	SMT	WRAPAROUND	FIXED RESISTOR		-55 Cel	100	Matte Tin (Sn) - with Nickel (Ni) barrier		.45 mm	50 V		1.6 mm	e3			.8 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.