THICK FILM CHIP RESISTORS RK73B
The RK73B series of thick film chip resistors offers a robust product lineup from 0402 to 6432 sizes. Featuring a metal glaze thick film for excellent heat and weather resistance, these resistors are suitable for reflow and wave soldering. They are RoHS compliant, with lead-free terminals. AEC-Q200 data is available for most models. Applications include automotive, medical, and aerospace equipment where safety and reliability are paramount.
Product Attributes
- Brand: RK73B
- Structure: Rectangular Chip Resistor
- Appearance Color: Black
- Material: Metal glaze thick film (protective film), Ceramic substrate
- Certifications: EU RoHS compliant (lead glass in electrodes, resistance film, and glass are exempt), AEC-Q200 (excluding 1F)
Technical Specifications
| Model (Size Code) | Dimensions (mm) | Weight (g/1000pcs) | Rated Power | Operating Temp. Range | Resistance Value Range () | Max. Operating Voltage | Max. Overload Voltage | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.40.02 x 0.20.02 x 0.10.03 x 0.110.03 x 0.130.02 | 0.04 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k1M (200), 100k10M (250) | 20V | 30V | 40,000 (TCM) / 20,000 (TBL) |
| 1H (0603/0201) | 0.60.03 x 0.30.03 x 0.10.05 x 0.150.05 x 0.230.03 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200), 1010M (400) | 25V | 50V | 15,000 (TCM) |
| 1E (1005/0402) | 1.00.1 x 0.50.05 x 0.20.1 x 0.250.05 x 0.350.05 | 0.68 | 0.1W | -55+155 | 110M (200), 110M (400) | 75V | 100V | TPL: 20,000 / TP: 10,000 |
| 1J (1608/0603) | 1.60.2 x 0.80.1 x 0.30.1 x 0.30.1 x 0.450.1 | 2.14 | 0.1W / 0.125W | -55+155 | 1.1k10M (200), 11M22M (400), 11k (0.125W, 200) | - | - | TP: 10,000 |
| 2A (2012/0805) | 2.00.2 x 1.250.1 x 0.40.2 x 0.30.1 x 0.50.1 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 150V | 200V | TP: 10,000 / TD: 5,000 |
| 2B (3216/1206) | 3.20.2 x 1.60.2 x 0.50.3 x 0.40.1 x 0.60.1 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | TP: 10,000 / TD: 5,000 |
| 2E (3225/1210) | 3.20.2 x 2.50.2 x 0.50.3 x 0.40.1 x 0.60.1 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | - | - | TP: 5,000 / TD: 4,000 |
| W2H (5025/2010) | 5.00.2 x 2.50.2 x 0.650.15 | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | - | - | TD: 4,000 |
| W3A (6432/2512) | 6.30.2 x 3.10.2 | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | TD: 4,000 |
| W3A2 (6432/2512) | 6.30.2 x 3.10.2 | 37.1 | 2.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | TD: 4,000 |
Performance Specifications
| Test Item | Guaranteed Value | Typical 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 for 1E, 2B, W3A2) |
| Soldering Heat Resistance | 0.5 (10R1M), 1 (R10, R1M) | - | 2605, 10s1s |
| Temperature Cycling | 1 (1F, Perf. "A"), 0.5 (others) | 0.5 (1F, Perf. "A"), 0.3 (others) | -55 (30min.)/+125 (30min.), 100 cycles (Std.), 1000 cycles (Perf. "A") |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others), 1.5 (1F) | 402, 90%-95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Durability | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 70 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
Power derating is required when operating above rated ambient temperature or exceeding rated terminal temperature. Refer to the provided curves for specific derating ratios based on terminal temperature and model series.
Temperature Rise Data
Temperature rise data is provided for reference under specific measurement conditions (25 ambient, FR-4 substrate, 35m Cu foil). Actual values may vary based on usage conditions and substrate.
Single Pulse Limiting Power Curves
Curves show the single-pulse limiting electric power based on pulse duration for different model groups. The upper limit for applied voltage is the maximum overload voltage. Consult for continuous pulse tolerance.
2403141437_KOA-RK73BW3ATTE470J_C159941.pdf
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