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.
2410121530_KOA-RK73H1ETTP22R1F_C5242641.pdf
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