Flat Chip Metal Film Resistors KOA RN731ETTP3162B25 Offering Tight Resistance Tolerances and Lead Free Termination
Product Overview
The RN73 is a series of flat chip resistors featuring a metal film construction. These high-precision resistors offer tight resistance tolerances as low as 0.05% and excellent temperature coefficient of resistance (T.C.R.) of 510-6/K as standard. They exhibit low current noise and are suitable for control circuits in various industrial equipment. The RN73 series supports both flow and reflow soldering and is available with lead-free termination, complying with EU-RoHS requirements. They are designed for SMD (Surface Mount Device) applications.
Product Attributes
- Brand: KOA (implied by www.koaglobal.com)
- Product Type: Metal Film Flat Chip Resistors
- Construction: Ceramic substrate with resistive film, inner electrodes, nickel plating, and solder plating.
- Coating Color: Black (1E), Green (1J, 2A, 2B, 2E)
- Certifications: EU-RoHS compliant (for lead-free termination products)
- Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2133A
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L x W | T (mm) | Weight (1000pcs) (g) | Power Rating (W) | Rated Ambient Temp. () | Rated Terminal Part Temp. () | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage (V) | Max. Overload Voltage (V) | Taping & Qty/Reel (pcs) |
| 1E (0402) | 1.0 x 0.50.05 | 0.350.05 | 0.68 | 0.063 | 70 | 75 | 250, 500 | 100100k | 50 | 100 | 10,000 |
| 1J (0603) | 1.60.2 x 0.80.1 | 0.450.10 | 2.14 | 0.063 / 0.1 | 70 | 75 | 100, 250, 500 | 1k47k / 10047k0 | 75 | 150 | 5,000 |
| 2A (0805) | 2.00.2 x 1.250.20 | 0.50.1 | 4.54 | 0.1 / 0.125 | 70 | 80 | 100, 250, 500 | 100100k / 51100k | 150 | 300 | 5,000 / 4,000 |
| 2B (1206) | 3.20.2 x 1.60.2 | 0.60.1 | 9.14 | 0.125 / 0.25 | 70 | 85 | 100, 250, 500 | 100300k / 51300k | 200 | 400 | 5,000 / 4,000 |
| 2E (1210) | 2.50.2 x 2.50.2 | 0.60.1 | 14.50 | 0.25 | 70 | 95 | 100, 250, 500 | 100510k / 51510k | 200 | 400 | 5,000 / 4,000 |
Performance
| Test Items | Standard Value (R(+0.05)) | Limit (Typical) | Test Methods |
| Resistance | Within specified tolerance | 25 | |
| Resistance Temperature Coefficient T.C.R. | Within specified T.C.R. | +25/+125T.C.R.510-6/K | |
| Overload (Short time) | General: 0.1 / High Power: 0.5 | 0.01 / 0.03 | Rated voltage2.5 or Max. overload vol., whichever is less, for 5s |
| Resistance to soldering heat | 0.1 | 0.04 | 2605, 10s1s |
| Rapid change of temperature | 0.25 | 0.03 | 5530min./12530min.300 cycles |
| Moisture resistance | General: 0.5 / High Power: 0.5 | 0.06 / 0.07 | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 70 | General: 0.25 / High Power: 0.5 | 0.02 / 0.1 | 702, 1000h (1.5h ON/0.5h OFF cycle) |
| High temperature exposure | 0.25 | 0.1 | +125, 1000h |
| High temperature exposure | 0.5 | 0.25 | +155, 1000h |
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 the derating curve.
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