Product Overview
The KOA Speer RN73R series are high-reliability metal film flat chip resistors designed for control circuits in various industrial equipment. They offer high precision, excellent T.C.R. performance, low current noise, and improved moisture resistance due to a high humidity protective coating. Suitable for both flow and reflow soldering, these resistors meet EU- RoHS requirements.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Origin: USA
- Certifications: EU-RoHS
- Material: Metal Film, Ceramic Substrate, Ni Plating, Solder Plating
Technical Specifications
| Part Designation | Type Size | Nominal Resistance | Resistance Tolerance | T.C.R. (ppm/C) | Rated Power @ 85C | Maximum Working Voltage | Maximum Overload Voltage | Rated Terminal Part Temp. | Operating Temperature |
| RN73R1E | 1E (0402) | 10 - 1M Ω | ±1%, ±0.5%, ±0.25%, ±0.1%, ±0.05% | ±10, ±25, ±50 | 0.063W | 50V | 75V | 90C | -55C to +155C |
| RN73R1J | 1J (0603) | 10 - 1.5M Ω | ±1%, ±0.5%, ±0.25%, ±0.1%, ±0.05% | ±10, ±25, ±50 | 0.1W | 75V | 150V | 95C | -55C to +155C |
| RN73R2A | 2A (0805) | 10 - 1.5M Ω | ±1%, ±0.5%, ±0.25%, ±0.1%, ±0.05% | ±10, ±25, ±50 | 0.125W | 100V | 150V | 100C | -55C to +155C |
| RN73R2B | 2B (1206) | 10 - 1M Ω | ±1%, ±0.5%, ±0.25%, ±0.1%, ±0.05% | ±10, ±25, ±50 | 0.25W | 150V | 300V | 110C | -55C to +155C |
| Parameter | Requirement (Limit) | Requirement (Typical) | Test Method |
| Resistance T.C.R. | Within specified tolerance | Within specified T.C.R. | |
| Overload (Short time) | ±0.05% | ±0.01% | Rated Voltage x 2.5 or Max. overload voltage, whichever is less for 5 seconds |
| Resistance to Solder Heat | ±0.05%* | ±0.01% | 260C ± 5C, 10 seconds ± 1 second |
| Rapid Change of Temperature | ±0.1%* | ±0.04% | 1E, 1J, 2A: -55C (30 minutes), +155C (30 minutes), 1000 cycles 2B: -55C (30 minutes), +155C (30 minutes), 500 cycles |
| Moisture Resistance | ±0.25% | ±0.07% | 85C ± 2C, 85%±5%RH, 1000 hours; 1.5 hr ON, 0.5 hr OFF cycle |
| Endurance at 85C | ±0.1% | ±0.04% | 85C ± 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle |
| High Temperature Exposure | ±0.25% | ±0.10% | +155C, 1000 hours |
*Depends on resistance value, please contact KOA Speer for details.
2304140030_KOA-RN73R2ATTD2201B25_C2480057.pdf
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