Metal Film Flat Chip Resistors KOA RN731ETTP3900B25 with Low TCR and Compliance to EU RoHS Standards
Metal Film Flat Chip Resistors - RN73 Series
The RN73 series are surface-mount metal film resistors designed for precision applications. They offer high accuracy with standard tolerance options of 0.05% and 0.1%, and a low resistance temperature coefficient (T.C.R.) of 510-6/K. These resistors feature low current noise and are suitable for control circuits in various industrial equipment. They are compatible with both flow and reflow soldering processes and feature lead-free termination, complying with EU-RoHS requirements.
Product Attributes
- Brand: KOA (implied by www.koaglobal.com)
- Product Type: Rectangular Metal Film Flat Chip Resistors
- Coating Color: Black (1E), Green (1J, 2A, 2B, 2E)
- Certifications: EU RoHS
- Termination: Lead-free plating
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L | Dimensions (mm) W | Dimensions (mm) c | Dimensions (mm) d | Dimensions (mm) t | Weight (g) (1000pcs) | Nominal Resistance Range () | Power Rating (W) | Max. Working Voltage (V) | Max. Overload Voltage (V) | T.C.R. (10-6/K) | Tolerance | Taping & Q'ty/Reel (pcs) |
| 1E (0402) | 1.0 +0.1 0.05 | 0.50.05 | 0.20.1 | 0.25 +0.05 0.1 | 0.350.05 | 0.68 | 100100k | 0.063 | 50 | 100 | 250, 500 | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 10,000 |
| 1J (0603) | 1.60.2 | 0.80.1 | 0.30.1 | 0.30.1 | 0.450.1 | 2.14 | 1k47k (General) 10047k0 (High Power) 15360k (High Power) | 0.063 (General) 0.1 (High Power) | 75 | 150 | 100, 250, 500 | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 5,000 |
| 2A (0805) | 2.00.2 | 1.250.2 | 0.40.2 | 0.3 +0.2 0.1 | 0.50.1 | 4.54 | 100100k (General) 51100k (High Power) 151M (High Power) | 0.1 (General) 0.125 (High Power) | 150 | 300 | 100, 250, 500 | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 5,000 (General) 4,000 (High Power) |
| 2B (1206) | 3.20.2 | 1.60.2 | 0.50.3 | 0.4 +0.2 0.1 | 0.60.1 | 9.14 | 100300k (General) 51300k (High Power) 151M (High Power) | 0.125 (General) 0.25 (High Power) | 200 | 400 | 100, 250, 500 | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 5,000 (General) 4,000 (High Power) |
| 2E (1210) | 2.50.2 | 2.50.2 | - | - | - | 14.5 | 100510k | 0.25 | 200 | 400 | 100, 250, 500 | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 5,000 (General) 4,000 (High Power) |
Performance
| Test Items | Performance Requirements (R) | Test Methods |
| Resistance | Within specified tolerance | - |
| 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% | Rated voltage2.5 or Max. overload vol., whichever is less, for 5s |
| Resistance to soldering heat | 0.1% | 2605, 10s1s |
| Rapid change of temperature | 0.25% | -5530min./12530min.300 cycles |
| Moisture resistance | General: 0.5% High Power: 0.5% | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 70 | General: 0.25% High Power: 0.5% | 702, 1000h (1.5h ON/0.5h OFF cycle) |
| High temperature exposure | 0.25% | +125, 1000h |
| High temperature exposure | 0.5% | +155, 1000h |
Precautions for Use
Handle with care to avoid static electricity discharge, which can damage the components or alter resistance values. Ensure proper cleaning after soldering, especially when using lead-free solder, to remove ionic impurities that can affect moisture and corrosion resistance. Avoid direct contact with tape adhesives when mounting and be cautious of water pressure during cleaning processes to prevent electrode exfoliation.
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