THICK FILM CHIP RESISTORS RK73B
The RK73B series are thick film chip resistors featuring a robust product lineup from 0402 to 6432 sizes. Utilizing a metal glaze thick film for the protective coating, these resistors offer excellent heat and weather resistance. They are compatible with reflow and wave soldering processes and feature lead-free terminals, complying with EU RoHS directives (lead in electrodes, resistive film, and glass are exempt). AEC-Q200 data is available for most models (excluding 1F). These resistors are suitable for a wide range of applications including automotive, medical, and aerospace equipment, especially where safety and reliability are paramount.
Product Attributes
- Brand: KOA
- Material: Ceramic substrate, Metal glaze thick film
- Color: Black
- Certifications: EU RoHS compliant (exemptions apply), AEC-Q200 (excluding 1F)
- Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Weight (g/1000pcs) | Rated Power | Operating Temp. Range | Resistance Value Range () | Tolerance | Max. Operating Voltage | Max. Overload Voltage | Packaging (pcs/reel) | Temp. Coefficient (10-6/K) |
| 1F (0402/01005) | 0.4 x 0.2 x 0.13 | 0.04 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k1M (200), 100k10M (250) | G:2%, J:5% | 20V | 30V | 40,000 (TCM) | 200, 250, 0+300 |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200), 1010M (400) | G:2%, J:5% | 25V | 50V | 15,000 (TBL/TCM) | 200, 400 |
| 1E (1005/0402) | 1.0 x 0.5 x 0.35 | 0.68 | 0.1W | -55+155 | 110M (200), 110M (400) | G:2%, J:5% | 75V | 100V | 10,000 (TP) | 200, 400 |
| 1J (1608/0603) | 1.6 x 0.8 x 0.45 | 2.14 | 0.1W | -55+155 | 1.1k10M (200), 11M22M (400), 11k (0.125W, 200) | G:2%, J:5% | - | - | 5,000 (TP) | 200, 400 |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400), 11M (200) | G:2%, J:5% | 150V | 200V | 10,000 (TP) | 200, 400 |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M10M (400), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 5,000 (TP) | 200, 400 |
| 2E (3225/1210) | 3.2 x 2.6 x 0.6 | 15.5 | 0.5W | -55+155 | 105.6M (200), 15.6M (200), 6.2M10M (400) | G:2%, J:5% | - | - | 5,000 (TP) | 200, 400 |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 24.3 | 0.75W | -55+155 | 105.6M (200), 15.6M (200), 6.2M22M (400) | G:2%, J:5% | - | - | 4,000 (TD) | 200, 400 |
| W3A (6432/2512) | 6.3 x 3.1 x 0.6 | 37.1 | 1.0W | -55+155 | 105.6M (200), 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 4,000 (TD) | 200, 400 |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.6 | 37.1 | 2.0W | -55+95 | 105.6M (200), 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 4,000 (TD) | 200, 400 |
Performance
| Test Item | Test Method | Guaranteed Value | Representative Value |
| Resistance Value | - | Within specified tolerance | (%) + 0.1 within specified tolerance |
| Temperature Coefficient of Resistance | 25 | Within specified value | - |
| Overload (Short time) | 2.5x rated voltage for 5 sec (2x for 1E, 2B, W3A2) | 1: 1F 0.5: others | 0.5: 1F 0.3: others |
| Soldering Heat Resistance | 2605, 10s1s | 1: 1FW3A2 (10R1M) 3: 1FW3A2 (R10, R1M) | 0.5: 1FW3A2 (10R1M) 1: 1FW3A2 (R10, R1M) |
| Temperature Cycling | 100 cycles (-55 (30min.)/+125 (30min.)) | 1: 1F 0.5: others | 0.5: 1F 0.3: others |
| Humidity Load | 1000h (402, 90%95%RH) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1.5: 1F 1: others |
| Endurance | 1000h (702 or rated terminal temp. 2, 1.5h ON, 0.5h OFF cycle) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1: others |
| High Temperature Storage | 1000h (+125: 1F, +155: others) | 1 | 0.5: 1F 0.3: others |
2403141437_KOA-RK73B1HTTC182J_C307020.pdf
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