RK73-RT Flat Chip Resistors (Anti-Sulfuration)
The RK73-RT series offers flat chip resistors with excellent anti-sulfuration characteristics due to a high sulfuration-proof inner top electrode material. These resistors feature excellent heat and weather resistance, high stability, and reliability through a triple-layer electrode structure. They are suitable for both flow and reflow soldering and meet EU RoHS requirements for lead-free terminations. The series is AEC-Q200 tested for various sizes.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Product Type: Flat Chip Resistors (Anti-Sulfuration)
- Certifications: AEC-Q200 Tested (0201, 0402, 0603, 0805, 1206, 1210, 2010, 2512), EU RoHS Compliant (for lead-free terminations)
- Material: Metal glaze thick film, triple-layer electrode structure
Technical Specifications
| Type | Size Code | Dimensions (mm) (L x W x T x D) | Power Rating (W) | Max. Working Voltage (V) | Resistance Range () | T.C.R. (ppm/C) | Operating Temp. Range (C) |
|---|---|---|---|---|---|---|---|
| RK73-RT | 1F (01005) | 0.63 x 0.32 x 0.16 x 0.1 | 0.03 | 20 | 1 - 9.1 | 100, 200 | -55 to +155 |
| RK73-RT | 1H (0201) | 1.0 x 0.5 x 0.2 x 0.2 | 0.05 | 20 | 10 - 1k | 100, 200, 300 | -55 to +155 |
| RK73-RT | 1E (0402) | 1.0 x 0.5 x 0.2 x 0.2 | 0.1 | 75 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | 1J (0603) | 1.6 x 0.8 x 0.3 x 0.3 | 0.1 | 100 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | 2A (0805) | 2.0 x 1.25 x 0.4 x 0.5 | 0.125 | 100 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | 2B (1206) | 3.2 x 1.6 x 0.5 x 0.5 | 0.25 | 150 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | 2E (1210) | 3.2 x 2.5 x 0.5 x 0.5 | 0.25 | 200 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | W2H (2010) | 5.0 x 2.0 x 0.6 x 0.4 | 0.5 | 200 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | W3A (2512) | 6.3 x 3.2 x 0.6 x 0.4 | 0.75 | 200 | 10 - 1M | 100, 200 | -55 to +155 |
| RK73-RT | W3A2 (2512) | 6.3 x 3.2 x 0.8 x 0.4 | 1 | 400 | 10 - 1M | 100, 200 | -55 to +155 |
Performance Characteristics
| Parameter | Requirement (Typical) | Limit (Typical) | Test Method |
|---|---|---|---|
| Resistance T.C.R. | Within specified tolerance | Within specified T.C.R. | |
| Overload (Short time) | 2% (1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds) | 1%: 1F 0.8%: All others | RK73B, RK73H: Rated Voltage x 2.5 for 5 seconds |
| Resistance to Solder Heat | 1%: 10R1M 3%: R<10, R>1M | 1%: R<10, R>1M 0.5%: All others | 260C 5C, 10 seconds 1 second |
| Rapid Change of Temperature | 1%: 1F 0.5%: All others | 0.5%: 1F 0.3%: All others | -55C (30 min), +125C (30 min), 100 cycles |
| Moisture Resistance | 2%: 1J, 2A, 2B 3%: All others | 0.75%: 1J, 2A, 2B 1.5%: 1F 1%: All others | 40C 2C, 90%-95% RH, 1000 hours |
| Endurance at 70C | 2%: 1J, 2A, 2B 3%: All others | 0.75%: 1J, 2A, 2B 1%: All others | 70C 2C, 1000 hours |
| High Temperature Exposure | 1% | 0.5% | +125C, 1000 hours (1F); +155C, 1000 hours (1H, 1E, 1J, 2A, 2B, 2E, W2H, W3A) |
| Sulfuration Test | 5% | 0.3%: 1F, 1H 0.2%: All others | Soaked in industrial oil with 3.5% sulfur concentration, 105C 3C, 500 hours |
Ordering Information
Example: RK73H 2A TD 1002 F T R
Format: RK73[Type] [Size Code] [Termination] [Power Rating] [Nominal Resistance] [Resistance Tolerance] [Packaging]
Type: RK73B, RK73H, RK73Z
Resistance Tolerance: D (0.5%), F (1%), G (2%), J (5%)
Termination Material: T (Sn)
Packaging: TD (4mm pitch punch paper), TBL/TCM (2mm pitch press paper), TPL/TP (2mm pitch punch paper), TE (4mm pitch plastic embossed)
2412061743_KOA-RK73H1ERTTP33R0F_C4304018.pdf
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