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 processes. The series is EU-RoHS compliant and AEC-Q200 qualified.
Product Attributes
- Brand: KOA
- Product Type: Metal Film Flat Chip Resistors (High Reliability)
- Coating Color: Black
- Certifications: EU-RoHS, AEC-Q200 Qualified
- Origin: Japan (implied by company name and language)
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L x W x t | Power Rating | Rated Ambient Temp. | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage | Max. Overload Voltage | Taping & Q'ty/Reel (pcs) |
| 1E (0402) | 1.0 x 0.5 x 0.35 | 0.063W | 85 | 100 | 4710k | 50V | 100V | 10,000 (TP, TD, TE) |
| 1E (0402) | 1.0 x 0.5 x 0.35 | 0.063W | 85 | 250 | 47300k | 50V | 100V | 10,000 (TP, TD, TE) |
| 1E (0402) | 1.0 x 0.5 x 0.35 | 0.063W | 85 | 500 | 10300k | 50V | 100V | 10,000 (TP, TD, TE) |
| 1J (0603) | 1.6 x 0.8 x 0.45 | 0.1W | 85 | 100 | 4759k | 75V | 150V | 5,000 (TP, TD, TE) |
| 1J (0603) | 1.6 x 0.8 x 0.45 | 0.1W | 85 | 250 | 151M | 75V | 150V | 5,000 (TP, TD, TE) |
| 1J (0603) | 1.6 x 0.8 x 0.45 | 0.1W | 85 | 500 | 101M | 75V | 150V | 5,000 (TP, TD, TE) |
| 1J (0603) | 1.6 x 0.8 x 0.45 | 0.1W | 85 | 100 | 101M | 75V | 150V | 5,000 (TP, TD, TE) |
| 2A (0805) | 2.0 x 1.25 x 0.5 | 0.125W | 85 | 100 | 47100k | 150V | 300V | 5,000 (TD), 4,000 (TE) |
| 2A (0805) | 2.0 x 1.25 x 0.5 | 0.125W | 85 | 250 | 151.5M | 150V | 300V | 5,000 (TD), 4,000 (TE) |
| 2A (0805) | 2.0 x 1.25 x 0.5 | 0.125W | 85 | 500 | 101.5M | 150V | 300V | 5,000 (TD), 4,000 (TE) |
| 2A (0805) | 2.0 x 1.25 x 0.5 | 0.125W | 85 | 100 | 101.5M | 150V | 300V | 5,000 (TD), 4,000 (TE) |
| 2B (1206) | 3.2 x 1.6 x 0.6 | 0.25W | 85 | 100 | 47300k | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2B (1206) | 3.2 x 1.6 x 0.6 | 0.25W | 85 | 250 | 151M | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2B (1206) | 3.2 x 1.6 x 0.6 | 0.25W | 85 | 500 | 101M | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2B (1206) | 3.2 x 1.6 x 0.6 | 0.25W | 85 | 100 | 101M | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2E (1210) | 2.5 x 2.0 x 0.5 | 0.25W | 85 | 100 | 100510k | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2E (1210) | 2.5 x 2.0 x 0.5 | 0.25W | 85 | 250 | 51510k | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2E (1210) | 2.5 x 2.0 x 0.5 | 0.25W | 85 | 500 | 151M | 200V | 400V | 5,000 (TD), 4,000 (TE) |
| 2E (1210) | 2.5 x 2.0 x 0.5 | 0.25W | 85 | 100 | 101M | 200V | 400V | 5,000 (TD), 4,000 (TE) |
Applications
- Car electronics
- Industrial equipment
- Medical equipment
- Aerospace equipment (with prior contact)
Reference Standards
- IEC 60115-8
- JIS C 5201-8
- EIAJ RC-2133A
Performance
| Test Items | Performance Requirements (Limit) | Typical | Test Methods |
| Resistance | Within specified tolerance | 25 | |
| T.C.R. | Within specified T.C.R. | +25/+125 : T.C.R.=5(10-6/K) +25/-55 and +25/+155 : another | |
| Overload (Short time) | 0.05% | 0.01% | Rated voltage 2.5 or Max. overload vol., whichever is less, for 5s |
| Resistance to soldering heat | 0.05% (2) | 0.01% | 2605, 10s1s |
| Rapid change of temperature | 0.1% (2) | 0.02% | 1E, 1J, 2A : -55 (30min.) /+155 (30min.) 1000 cycles 2B, 2E : -55 (30min.) /+155 (30min.) 500 cycles |
| Moisture resistance | 0.1% (2) | 0.05% | 852, 85%5%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 85 | 0.1% | 0.03% | 852, 3000h (1.5h ON/0.5h OFF cycle) |
| High temperature exposure | 0.1% (2) | 0.05% | +155, 1000h |
(2 Depends on resistance value)
Precautions for Use
Users should be aware of potential electrostatic discharge (ESD) risks during handling and mounting, especially in dry conditions or after prolonged vibration. Ionic impurities from flux, sweat, or saliva can cause electrical corrosion; thorough cleaning is recommended, especially when using RMA solder/flux or lead-free solder. Avoid direct contact of mounting tape adhesives with the product to prevent electrode exfoliation. High-pressure shower cleaning may also cause electrode exfoliation; evaluate carefully before use.
2410121632_KOA-RN73H2ATTD2200B25_C186237.pdf
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