RK73H Precision Thick Film Chip Resistor
The RK73H series is a precision thick film chip resistor featuring a protective coating, inner electrode, resistive film, and ceramic substrate. It offers excellent heat and weather resistance due to its metal glaze thick film construction and is suitable for both flow and reflow soldering. Products with lead-free terminations meet EU RoHS requirements. This series is AEC-Q200 tested for various package sizes.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Certifications: AEC-Q200 Tested (0201 to 2512 sizes)
- Material: Thick Film
- Termination Material: Sn Plating, Ni Plating (Standard), Au (Optional for 1E, 1J, 2A), Sn/Pb (Optional for 1F, 1H, W2H, W3A, W3A2)
Technical Specifications
| Type | Size Code (EIA) | Dimensions (L x W x T) (mm) | Power Rating (W) | Resistance Range () | Tolerance (%) | T.C.R. (x10^-6/K) | Max. Working Voltage (V) |
| RK73H1F | 01005 | 0.4 x 0.2 x 0.1 (0.05) | 0.03 | 10 - 91k* | 0.5, 1 | 250 | 20 |
| RK73H1H | 0201 | 0.6 x 0.3 x 0.15 (0.05) | 0.05 | 1 - 9.1, 10 - 1M, 1.02M - 10M* | 0.5, 1 | 200, 400 | 25 |
| RK73H1E | 0402 | 1.0 x 0.5 x 0.25 (0.05) | 0.125 | 10 - 1k, 100k - 2M* | 0.5, 1 | 200, 250 | 30 |
| RK73H1J | 0603 | 1.6 x 0.8 x 0.3 (0.1) | 0.1 | 10 - 1M | 0.5, 1 | 200, 400 | 50 |
| RK73H2A | 0805 | 2.0 x 1.25 x 0.5 (0.1) | 0.25 | 10 - 1M | 0.5, 1 | 100, 200 | 75 |
| RK73H2B | 1206 | 3.2 x 1.6 x 0.55 (0.15) | 0.25 | 10 - 1M | 0.5, 1 | 100, 200 | 100 |
| RK73H2E | 1210 | 3.2 x 2.5 x 0.65 (0.15) | 0.5 | 10 - 1M | 0.5, 1 | 100, 200 | 150 |
| RK73HW2H/2H | 2010 | 5.0 x 2.5 x 0.65 (0.15) | 1.0 | 10 - 1M | 0.5, 1 | 100, 200 | 200 |
| RK73HW3A/3A | 2512 | 6.3 x 3.1 x 0.65 (0.15) | 2.0 | 10 - 1M | 0.5, 1 | 100, 200 | 400 |
| RK73HW3A2 | 2512 | 6.3 x 3.1 x 0.65 (0.15) | 2.0 | 10 - 1M, 5.62M - 10M | 0.5, 1 | 100, 200, 400 | 400 |
Performance Characteristics
| Parameter | Requirement | Limit (Typical) | Test Method |
| Resistance T.C.R. | Within specified tolerance | Within specified T.C.R. | |
| Overload (Short time) | Rated Voltage x 2.5 for 5 seconds (1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds) | 2% | |
| Resistance to Soldering Heat | 260C 5C, 10 seconds 1 second | 1% (1F); 0.5% (Others) | |
| Rapid Change of Temperature Characteristic (Nil) | -55C (30 min), +125C (30 min), 100 cycles | 1% (1F); 0.5% (Others) | |
| Characteristic (A) Heat Shock Resistance | -55C (30 min), +125C (30 min), 1000 cycles | 0.5% (1F); 0.3% (Others) | |
| Moisture Resistance | 40C 2C, 90%-95% RH, 1000 hours | 2% (1J, 2A, 2B); 3% (Others) | |
| Endurance at 70C | 70C 2C, 1000 hours | 2% (1J, 2A, 2B); 3% (Others) | |
| High Temperature Exposure | +125C, 1000 hours (1F); +155C, 1000 hours (Others) | 1% (1F); 0.5% (Others) |
2411041704_KOA-RK73H1JTTD5623F_C4259678.pdf
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