Product Overview
The RN73H series are high-reliability metal film flat chip resistors designed for demanding applications. They offer high precision with resistance tolerances as tight as 0.05% and excellent temperature coefficient of resistance (TCR) of 510-6/K. These resistors feature low current noise, a wide operating temperature range up to 155, and improved moisture resistance due to a special protective coating. They are suitable for control circuits in various industrial equipment and are compatible with both flow and reflow soldering. The series meets EU-RoHS requirements and is AEC-Q200 qualified.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Metal Film, High Reliability)
- Coating Color: Black
- Certifications: EU-RoHS, AEC-Q200 Qualified
- Origin: Japan (Implied by language and company name)
Technical Specifications
| Type | Nominal Resistance | Resistance Tolerance | Power Rating | Rated Ambient Temp. | T.C.R. (10-6/K) | Max. Working Voltage | Max. Overload Voltage | Taping & Q'ty/Reel (pcs) |
| 1E (0402) | 4710k | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 0.063W | 85 | 100, 250, 500 | 50V | 100V | TP:10,000, TD:10,000, TE:10,000 |
| 1J (0603) | 10059k (100 TCR) / 47360k (250 TCR) / 151M (500 TCR) / 101M (100 TCR) | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 0.1W | 85 | 100, 250, 500 | 75V | 150V | TP:5,000, TD:5,000, TE:5,000 |
| 2A (0805) | 100100k (100 TCR) / 471M (250 TCR) / 151.5M (500 TCR) / 101.5M (100 TCR) | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 0.125W | 85 | 100, 250, 500 | 150V | 300V | TP:5,000, TD:4,000, TE:4,000 |
| 2B (1206) | 100300k (100 TCR) / 471M (250 TCR) / 151M (500 TCR) / 101M (100 TCR) | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 0.25W | 85 | 100, 250, 500 | 200V | 400V | TP:5,000, TD:4,000, TE:4,000 |
| 2E (1210) | 100510k (100 TCR) / 51510k (250 TCR) / 151M (500 TCR) / 101M (100 TCR) | A:0.05%, B:0.1%, C:0.25%, D:0.5%, F:1% | 0.25W | 85 | 100, 250, 500 | 200V | 400V | TP:5,000, TD:4,000, TE:4,000 |
Performance
| Test Items | Performance Requirements | Test Methods |
| Resistance | Within specified tolerance | 25 |
| T.C.R. | Within specified T.C.R. | +25/+125 : T.C.R.=5(10-6/K) |
| Overload (Short time) | R0.05% (Limit) / 0.01% (Typical) | Rated voltage 2.5 or Max. overload vol., whichever is less, for 5s |
| Resistance to soldering heat | R0.05% (Limit) / 0.01% (Typical) | 2605, 10s1s |
| Rapid change of temperature | R0.1% (Limit) / 0.02% (Typical) | 1E, 1J, 2A : -55 (30min.) /+155 (30min.) 1000 cycles; 2B, 2E : -55 (30min.) /+155 (30min.) 500 cycles |
| Moisture resistance | R0.1% (Limit) / 0.05% (Typical) | 852, 85%5%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 85 | R0.1% (Limit) / 0.03% (Typical) | 852, 3000h (1.5h ON/0.5h OFF cycle) |
| High temperature exposure | R0.1% (Limit) / 0.05% (Typical) | +155, 1000h |
Applications
- Car electronics
- Industrial equipment
- Medical equipment
Precautions for Use
Ensure proper handling to avoid electrostatic discharge, which can damage components and alter resistance values. Be mindful of ionic impurities from flux, sweat, or saliva, as they can cause electrical corrosion, especially with lead-free solder. Thorough cleaning is recommended before applying moisture-proof coatings. Avoid direct contact with adhesives from heat-resistant masking tapes during mounting, as this can lead to electrode exfoliation. High-pressure shower cleaning should also be avoided or evaluated prior to use due to potential electrode damage.
2410121632_KOA-RN73H1ETTP3001B25_C186148.pdf
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