Low Resistance Flat Chip Resistors KOA SR732BTTDR910F for Current Detection in Power Supply Circuits

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Product Description

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 are AEC-Q200 qualified (excluding 1H type). They are widely used in automotive electronics, computers, HDDs, cellular phones, and power supplies.

Product Attributes

Brand: KOA
Product Type: Low Resistance Flat Chip Resistors
Coating Color: Black (1H), Indigo (1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2)
Material: Ceramic substrate, resistive film, internal electrode, Ni plating, solder plating
Certifications: EU-RoHS compliant (lead-free termination), AEC-Q200 qualified (Exemption 1H)
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	Weight (g/1000pcs)	Power Rating	Rated Ambient Temp.	Rated Terminal Part Temp.	T.C.R. (10^-6/K)	Resistance Range ()	Taping & Qty /Reel (pcs)
1H (0201)	0.60.03 x 0.30.03 x 0.230.03	0.14	0.1W	70		04000 (05000)	110 (0.2710) (0.180.24) (0.10.18)	TCM: 15,000
1E (0402)	1.0 x 0.5 x 0.350.05	0.68	0.166W	70	125	2000 (3000) (5000)	0.5110.0 (0.20.47) (0.10.18)	TPL: 20,000, TP: 10,000
1J (0603)	1.60.2 x 0.8 x 0.450.1	2.14	0.2W	70	125	2000	1.0210. (0.11) (0.11)	TP: 10,000, 5,000
1J (0603)	1.60.2 x 0.8 x 0.450.1	2.14	0.25W	70	125	2000	0.11 (0.11) (0.11)	TP: 10,000, 5,000
2A (0805)	2.00.2 x 1.250.1 x 0.50.1	4.54	0.33W	70	125	1000 (2000) (5000) (8000)	0.1510 (0.110.) (0.110.) (0.0510.091) (0.030.047)	TP: 10,000, 5,000, 4,000
2A (0805)	2.00.2 x 1.250.1 x 0.50.1	4.54	0.5W		105	1000 (2000) (5000) (8000)	0.1510 (0.110.) (0.110.) (0.0510.091) (0.030.047)	TP: 10,000, 5,000, 4,000
2B (1206)	3.20.2 x 1.60.2 x 0.60.1	9.14	0.33W	70	125	1000 (2000) (5000) (8000)	0.1510 (0.110.) (0.110.) (0.0560.091) (0.030.051)	5,000, 4,000
2B (1206)	3.20.2 x 1.60.2 x 0.60.1	9.14	0.5W		110	1000 (2000) (5000) (8000)	0.1510 (0.110.) (0.110.) (0.0560.091) (0.030.051)	5,000, 4,000
2E (1210)	2.60.2 x 1.60.2 x 0.60.1	15.50	0.5W	70	125	1000 (2000) (5000) (1000)	0.110. (0.04710.00) (0.0360.043) (0.0240.033)	5,000, 4,000
2E (1210)	2.60.2 x 1.60.2 x 0.60.1	15.50	0.66W		110	1000 (2000) (5000) (1000)	0.110. (0.04710.00) (0.0360.043) (0.0240.033)	5,000, 4,000
W2H (2010)	5.00.2 x 2.50.2 x 0.650.15	24.30	0.75W	70	125	1000 (2000) (5000) (8000)	0.110. (0.110.) (0.0560.091) (0.0330.051)	4,000
W3A (2512)	6.30.2 x 3.10.2 x 0.70.1	37.10	1W	70	125	1000 (2000) (5000) (8000)	0.110. (0.110.) (0.0560.091) (0.0390.051)	4,000
W3A2 (2512)	6.30.2 x 3.10.2 x 0.70.1	37.10	2W		95	1000 (2000) (5000) (8000)	0.110. (0.110.) (0.0560.091) (0.0390.051)	4,000

Performance

Test Items	Performance Requirements	Limit	Test Methods
Resistance	Within specified tolerance		25
T.C.R.	Within specified T.C.R		+25/55 and +25/+125
Overload (Short time)	2 (3:1H, 1:1E~W3A2)	0.5 (0.75:1H, 0.3:1E~W3A2)	Rated voltage2.5 for 5s (W3A2: Rated voltage2.0 for 5s)
Resistance to soldering heat	1 (1E~W3A2)	0.3 (1E~W3A2)	2605, 10s1s
Rapid change of temperature	1	0.3	40 (30min.)/+125 (30min.) 100 cycles
Moisture resistance	2 (1E~W3A2)	1	402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle)