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Current detecting flat chip resistor KOA SR732ATTDR470F low resistance type with ceramic alumina substrate

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Current detecting flat chip resistor KOA SR732ATTDR470F low resistance type with ceramic alumina substrate

Power(Watts) : 330mW

Resistance : 470mΩ

Temperature Coefficient : ±100ppm/℃

Operating Temperature : -55℃~+150℃

Type : Thick Film Resistor

Tolerance : ±1%

Description : 470mΩ ±1% 330mW 0805 Thick Film Resistor

Mfr. Part # : SR732ATTDR470F

Model Number : SR732ATTDR470F

Package : 0805

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Product Overview

The SR73 series are low resistance flat chip resistors designed for current detection in power supply and motor circuits. They offer high reliability and performance with a resistance tolerance of 0.5% and a temperature coefficient of 10010^-6/K. These resistors are suitable for both reflow and flow soldering and meet EU-RoHS requirements for lead-free termination. Many models are AEC-Q200 qualified.

Product Attributes

Brand: KOA (implied by www.koaglobal.com)
Product Line: SR73
Type: Low Resistance Flat Chip Resistors (Current Detecting Chip Resistors)
Certifications: EU-RoHS compliant (for lead-free termination), AEC-Q200 qualified (Exemption 1H)
Material: Ceramic substrate (Alumina)
Construction: Protective coating, Resistive film, Inner electrode, Ni plating, Solder plating
Coating Color: Black (1H), Indigo (1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2)
Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C

Technical Specifications

Type (Inch Size Code)	Dimensions (mm) L x W x t	Power Rating (W)	Rated Ambient Temp. (C)	Rated Terminal Part Temp. (C)	Resistance Tolerance	T.C.R. (10^-6/K)	Resistance Range ()	Taping & Qty /Reel (pcs)	Weight (g/1000pcs)
1H (0201)	0.6 x 0.3 x 0.23	0.1	70		D:0.5%, F:1%, G:2%, J:5%	0+4000 (0+5000)	110 (0.2710, 0.180.24, 0.10.18)	TCM: 15,000	0.14
1E (0402)	1.0 x 0.5 x 0.35	0.166	70	125	D:0.5%, F:1%, G:2%, J:5%	2000, 3000, 5000	0.5110.0 (0.20.47, 0.10.18)	TPL: 20,000, TP: 10,000	0.68
1J (0603)	1.6 x 0.8 x 0.45	0.2	70	125	D:0.5%, F:1%, G:2%, J:5%	2000	1.110. (0.11)	TP: 10,000, 5,000	2.14
2A (0805)	2.0 x 1.25 x 0.5	0.33 (0.5 5)	70 (70 5)	125 (105 5)	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 8000	0.1510 (0.110., 0.0510.091, 0.030.047)	TP: 10,000, 5,000, 4,000	4.54
2B (1206)	3.2 x 1.6 x 0.6	0.33 (0.5 5)	70 (70 5)	125 (110 5)	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 8000	0.1510 (0.110., 0.0560.091, 0.030.051)	5,000, 4,000	9.14
2E (1210)	2.6 x 1.6 x 0.6	0.5 (0.66 5)	70 (70 5)	125 (110 5)	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 1000	0.110. (0.04710.00, 0.0360.043, 0.0240.033)	5,000, 4,000	15.50
W2H (2010)	5.0 x 2.5 x 0.65	0.75	70	125	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 8000	0.110. (0.110., 0.0560.091, 0.0330.051)	4,000	24.30
W3A (2512)	6.3 x 3.1 x 0.7	1.0	70	125	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 8000	0.110. (0.110., 0.0560.091, 0.0390.051)	4,000	37.10
W3A2 (2512)	6.3 x 3.1 x 0.7	2.0		95	D:0.5%, F:1%, G:2%, J:5%	1000, 2000, 5000, 8000	0.110. (0.110., 0.0560.091, 0.0390.051)	4,000	37.10

Applications

Current detecting resistors for power supply, motor circuits, etc.
Car electronics, Computers, HDDs, Cellular-telephones, Power supplies, and Motor circuits, etc.

Features

High reliability and performance with resistance tolerance 0.5%, T.C.R. 10010^-6/K.
Suitable for both reflow and flow solderings.
Products with lead free termination meet EU-RoHS requirements.
AEC-Q200 qualified (Exemption 1H).

Derating Curve

For resistors operated at an ambient temperature of 70 or above, a power rating shall be derated in accordance with the derating curve. For resistors operated at terminal part temperature of described for each size or above, a power rating shall be derated in accordance with derating curve.

Precautions for Use

Cracks may occur at the solder connection due to thermal stress from differences in thermal expansion coefficients between the chip resistor substrate (alumina) and the mounting board, especially with larger types (W2H, W3A, W3A2) due to larger thermal expansion and self-heating. Design carefully when significant ambient temperature changes or load ON/OFF cycles are expected.
The resistance value after soldering may change depending on the size of the pad pattern or the amount of solder. Confirm the effect of resistance value changes before designing the equipment.

2410121322_KOA-SR732ATTDR470F_C186589.pdf

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