Performance KOA RK73H1ETTP22R1F Thick Film Chip Resistor with Ceramic Substrate and Automotive Grade
RK73H Precision Thick Film Chip Resistor
The RK73H series of precision thick film chip resistors offers tight tolerances of 0.5% and 1% for reliable performance in demanding applications. These resistors feature lead-free terminations that comply with EU RoHS requirements. They are AEC-Q200 qualified, ensuring suitability for automotive and other critical environments. The thick film construction on a ceramic substrate provides robust and stable operation.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Certifications: EU RoHS, AEC-Q200 Qualified
- Material: Thick film resistive element, ceramic substrate, Ni plating, solder plating
Technical Specifications
| Type/Size | L (mm) | W (mm) | t (mm) | d (mm) | c (mm) | Power Rating (W) | Max Working Voltage (V) | Operating Temp. Range (C) | T.C.R. (x10-6/K) | Resistance Range |
| 1F (01005) | 0.4 (0.016) | 0.2 (0.008) | 0.1 (0.004) | 0.11 (0.004) | 0.13 (0.005) | 0.03 | 20 | -55 to +125 | 250 | 10 - 91k |
| 1H (0201) | 0.6 (0.024) | 0.3 (0.012) | 0.1 (0.004) | 0.1 (0.004) | 0.1 (0.004) | 0.05 | 25 | -55 to +125 | 200 | 10 - 1M (E-24) |
| 1E (0402) | 1.0 (0.039) | 0.5 (0.02) | 0.15 (0.006) | 0.23 (0.009) | 0.2 (0.008) | 0.1 | 50 | -55 to +155 | 200 | 10 - 10M (E-24, E-96) |
| 1J (0603) | 1.6 (0.063) | 0.8 (0.031) | 0.2 (0.008) | 0.3 (0.012) | 0.25 (0.01) | 0.125 | 50 | -55 to +155 | 200 | 10 - 1M (E-24, E-96) |
| 2A (0805) | 2.0 (0.079) | 1.25 (0.049) | 0.25 (0.01) | 0.3 (0.012) | 0.3 (0.012) | 0.25 | 75 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
| 2B (1206) | 2.6 (0.102) | 1.6 (0.063) | 0.35 (0.014) | 0.4 (0.016) | 0.35 (0.014) | 0.25 | 100 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
| 2E (1210) | 3.2 (0.126) | 2.0 (0.079) | 0.4 (0.016) | 0.5 (0.02) | 0.4 (0.016) | 0.5 | 150 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
| W2H / 2H (2010) | 5.0 (0.197) | 2.5 (0.098) | 0.5 (0.02) | 0.65 (0.026) | 0.5 (0.02) | 0.75 | 200 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
| W3A / 3A (2512) | 6.3 (0.248) | 3.1 (0.122) | 0.6 (0.024) | 0.65 (0.026) | 0.5 (0.02) | 1.0 | 200 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
| W3A2 (2512) | 6.3 (0.248) | 3.1 (0.122) | 0.6 (0.024) | 0.65 (0.026) | 0.5 (0.02) | 2.0 | 400 | -55 to +155 | 100, 200 | 10 - 1M (E-24, E-96) |
Performance Characteristics
| Parameter | Requirement | Test Method |
| Resistance T.C.R. | Within specified tolerance | |
| Overload (Short time) | 2% (1%: 1F) | Rated Voltage x 2.5 for 5 seconds (1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds) |
| Resistance to Soldering Heat | 1% (0.5%: 1F) | 260C 5C, 10 seconds 1 second |
| Rapid Change of Temperature | 0.5% (0.3%: 1F) | -55C (30 min), +125C (30 min), 100 cycles |
| Moisture Resistance | 0.75% (1J, 2A, 2B), 1.5% (1F), 1% (Others) | 40C 2C, 90%-95% RH, 1000 hours |
| Endurance at 70C | 0.75% (1J, 2A, 2B), 1% (Others) | 70C 2C, 1000 hours |
| High Temperature Exposure | 0.5% (1F), 0.3% (Others) | +125C, 1000 hours (1F); +155C, 1000 hours (Others) |
Applications and Ratings
These resistors are suitable for general-purpose applications where precision and reliability are required. For resistors operated at an ambient temperature of 70C or above, or at a terminal part temperature above specified limits, power rating must be derated according to the provided derating curves.
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