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Specifications
Power(Watts):
330mW
Resistance:
470mΩ
Temperature Coefficient:
±100ppm/℃
Operating Temperature:
-55℃~+150℃
Type:
Thick Film Resistor
Tolerance:
±1%
Mfr. Part #:
SR732ATTDR470F
Package:
0805
Key Attributes
Model Number:
SR732ATTDR470F
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 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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