RK73H Precision Thick Film Chip Resistor
The RK73H series is a high-precision thick film chip resistor designed for a wide range of applications. Featuring a protective coating, inner electrode, resistive film, and ceramic substrate, these resistors offer excellent heat and weather resistance due to their metal glaze thick film construction. They are suitable for both flow and reflow soldering and meet EU RoHS requirements for lead-free terminations. The series is AEC-Q200 tested across multiple sizes, ensuring reliability and performance in demanding environments.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Material: Thick Film, Ceramic Substrate, Sn Plating, Ni Plating
- Certifications: AEC-Q200 Tested (0201 to 2512 sizes)
- Compliance: EU RoHS compliant (lead-free terminations)
Technical Specifications
| Type | Size Code (EIA) | Dimensions (L x W x T) (mm) | Power Rating (W) | Resistance Range () | Tolerance (%) | Max. Working Voltage (V) | T.C.R. (ppm/K) | Operating Temp. Range (C) |
|---|---|---|---|---|---|---|---|---|
| RK73H1F | 01005 | 0.4 x 0.2 x 0.1 | 0.03 | 10 - 1M | 0.5, 1 | 20 | 250, 400 | -55 to +125 |
| RK73H1H | 0201 | 0.6 x 0.3 x 0.15 | 0.05 | 10 - 1M (E24), 1 - 9.1 (E24), 1M - 10M* | 0.5, 1 | 25 | 200, 400 | -55 to +125 |
| RK73H1E | 0402 | 1.0 x 0.5 x 0.23 | 0.1 | 10 - 1k, 10 - 1M, 1.02M - 10M* | 0.5, 1 | 30 | 100, 200, 250 | -55 to +155 |
| RK73H1J | 0603 | 1.6 x 0.8 x 0.35 | 0.125 | 10 - 1M, 10 - 1k | 0.5, 1 | 50 | 100, 200 | -55 to +155 |
| RK73H2A | 0805 | 2.0 x 1.25 x 0.55 | 0.25 | 10 - 1M, 10 - 1k | 0.5, 1 | 75 | 100, 200 | -55 to +155 |
| RK73H2B | 1206 | 3.2 x 1.6 x 0.55 | 0.25 | 10 - 1M, 10 - 1k | 0.5, 1 | 100 | 100, 200 | -55 to +155 |
| RK73H2E | 1210 | 3.2 x 2.5 x 0.6 | 0.5 | 10 - 1M | 0.5, 1 | 150 | 100, 200 | -55 to +155 |
| RK73HW2H/RK73H2H | 2010 | 5.0 x 2.5 x 0.6 | 0.75 (W2H), 1 (2H) | 10 - 1M | 0.5, 1 | 200 | 100, 200 | -55 to +155 |
| RK73HW3A/RK73H3A | 2512 | 6.3 x 3.1 x 0.65 | 1.0 (W3A), 1.0 (3A) | 10 - 1M | 0.5, 1 | 200 | 100, 200 | -55 to +155 |
| RK73HW3A2 | 2512 | 6.3 x 3.1 x 0.65 | 2.0 | 10 - 1M, 5.62M - 10M | 0.5, 1 | 400 | 100, 200, 400 | -55 to +155 |
Performance Characteristics
| Parameter | Requirement | Limit | 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 ~ W3A2, 10R1M); 3% (1H ~ W3A2, R<10, R>1M) | - |
| Rapid Change of Temperature Characteristic (Standard) | -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, 1.5 hr ON, 0.5 hr OFF cycle | 2% (1J, 2A, 2B); 3% (Others) | - |
| Endurance at 70C | 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle | 2% (1J, 2A, 2B); 3% (Others) | - |
| High Temperature Exposure | +125C, 1000 hours (1F); +155C, 1000 hours (1E, 1H, 1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A/W3A2) | 1% (1F); 0.5% (Others) | - |
Derating Curves
For resistors operated at an ambient temperature of 70C or higher, power shall be derated according to the derating curve. Similarly, if the terminal part temperature exceeds the rated terminal part temperature, power shall be derated according to the terminal part temperature derating curve. Refer to the catalog for detailed derating curve information.
Ordering Information Example
RK73H [Type] [Size Code] [Nominal Resistance] [Tolerance] [Termination Material] [Packaging]
Example: RK73H2B TD 1003 F T
Tolerance Codes: D: 0.5%, F: 1%
Termination Material Codes: T: Sn Plating (Standard), G: Au Plated (available for 1E, 1J, 2A types, 101M)
Packaging Codes: TD: 4mm pitch punch paper, TBL: 4mm width - 1mm pitch plastic embossed, TPL: 2mm pitch press paper, TPL: 2mm pitch punch paper, TE: 4mm pitch plastic embossed
2411041704_KOA-RK73H1JTTD8202D_C7050241.pdf
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