THICK FILM CHIP RESISTORS RK73B
The RK73B series are thick film chip resistors featuring a robust product lineup from 0402 to 6432 sizes. Constructed with a metal glaze thick film for superior heat and weather resistance, these resistors are suitable for reflow and wave soldering. They are RoHS compliant with lead-free terminals, and lead glass in electrodes, resistance film layers, and glass are exempt from EU RoHS directives. AEC-Q200 data is available for most models.
Product Attributes
- Brand: KOA
- Product Type: Rectangular Chip Resistors
- Construction: Thick Film
- Material: Ceramic Substrate, Metal Glaze Thick Film
- Appearance Color: Black
- Certifications: AEC-Q200 (excluding 1F), EU RoHS compliant (terminals lead-free)
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x d x t | Weight (g/1000pcs) | Rated Power | Operating Temp. Range (C) | Resistance Value Range () | Tolerance | Max. Operating Voltage (V) | Max. Overload Voltage (V) | Packaging (pcs/reel) | TCR (x10-6/K) |
| 1F (0402/01005) | 0.4x0.2x0.11x0.13 | 0.04 | 0.03W | -55 to +125 | 1 to 9.1 (250), 10 to 91k (250), 100k to 1M (200), 100k to 10M (200) | G:2%, J:5% | 20 | 30 | 40,000 (TCM) | 200, 250 |
| 1H (0603/0201) | 0.6x0.3x0.15x0.23 | 0.14 | 0.05W | -55 to +155 | 1 to 9.1 (400), 10 to 10M (200) | G:2%, J:5% | 25 | 50 | 15,000 (TBL/TCM) | 200, 400 |
| 1E (1005/0402) | 1.0x0.5x0.25x0.35 | 0.68 | 0.1W | -55 to +155 | 1 to 10M (200) | G:2%, J:5% | 75 | 100 | 10,000 (TP), 20,000 (TPL) | 200 |
| 1J (1608/0603) | 1.6x0.8x0.3x0.45 | 2.14 | 0.1W / 0.125W | -55 to +155 | 1.1k to 10M (200), 11M to 22M (400), 1 to 1k (0.125W, 200) | G:2%, J:5% | - | - | 5,000 (TP) | 200, 400 |
| 2A (2012/0805) | 2.0x1.25x0.3x0.5 | 4.54 | 0.25W | -55 to +155 | 1 to 1M (200), 1.1M to 10M (400) | G:2%, J:5% | 150 | 200 | 10,000 (TP), 5,000 (TD) | 200, 400 |
| 2B (3216/1206) | 3.2x1.6x0.4x0.6 | 9.14 | 0.25W | -55 to +155 | 1 to 5.6M (200), 6.2M to 22M (400) | G:2%, J:5% | 200 | 400 | 5,000 (TD) | 200, 400 |
| 2E (3225/1210) | 3.2x2.6x0.4x0.6 | 15.5 | 0.5W | -55 to +155 | 10 to 5.6M (200), 6.2M to 10M (400) | G:2%, J:5% | - | - | 5,000 (TD) | 200, 400 |
| W2H (5025/2010) | 5.0x2.5x0.65x- | 24.3 | 0.75W | -55 to +155 | 10 to 5.6M (200), 6.2M to 22M (400) | G:2%, J:5% | - | - | 4,000 (TD) | 200, 400 |
| W3A (6432/2512) | 6.3x3.1x-x- | 37.1 | 1.0W | -55 to +155 | 10 to 5.6M (200), 6.2M to 22M (400) | G:2%, J:5% | 200 | 400 | 4,000 (TD) | 200, 400 |
| W3A2 (6432/2512) | 6.3x3.1x-x- | - | 2.0W | -55 to +95 | 10 to 5.6M (200), 6.2M to 22M (400) | G:2%, J:5% | 200 | 400 | 4,000 (TD) | 200, 400 |
Performance Characteristics
| Test Item | Standard Value | Guaranteed Value | Test Method |
| Resistance Value | Within specified tolerance | - | 25 |
| Temperature Coefficient of Resistance | Within specified value | - | +25/-55, +25/+125 |
| Overload (Short time) | 1 (1F), 0.5 (others) | - | 2.5x rated voltage for 5s (2x rated voltage for 1E, 2B, W3A2) |
| Resistance to Soldering Heat | 1 (1F-W3A2, 10R1M), 3 (R10, R1M) | 0.5 (1F-W3A2, 10R1M), 1 (R10, R1M) | 2605, 10s1s |
| Temperature Cycling | 1 (1F), 0.5 (others) | 0.5 (1F), 0.3 (others) | -55 (30min.)/+125 (30min.), 100 cycles (standard), 1000 cycles (HS) |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 402, 90%-95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Endurance | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) |
| High Temperature Storage | 1 | 0.5 (1F), 0.3 (others) | +125, 1000h (1F); +155, 1000h (others) |
Power Derating Curves
Note: Power derating is required when operating above rated ambient temperature or rated terminal temperature. Refer to the derating curves for specific models.
Single Pulse Limiting Power Curves
Note: These are reference values. Actual performance may vary based on usage conditions and substrate. Consult for continuous pulse application.
2403141437_KOA-RK73B1JTTD182G_C830100.pdf
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