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 processes. They are RoHS compliant, with lead-free terminals. AEC-Q200 data is available for most models.
Product Attributes
- Brand: KOA
- Product Type: Thick Film Chip Resistors
- Construction: Rectangular Chip Resistor
- Appearance Color: Black
- Material: Ceramic Substrate, Metal Glaze Thick Film
- Certifications: EU RoHS compliant (excluding lead glass in electrodes, resistive film, and glass), AEC-Q200 (except 1F)
- Reference 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 (at 70) | Operating Temp. Range | Max. Operating Voltage | Resistance Value Range () | Tolerance | Temp. Coefficient (x10-6/K) | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.4 x 0.2 x 0.13 | 0.04 | 0.03W | -55+125 | 20V | 19.1k (250), 100k10M (200) | G:2%, J:5% | 200, 250, 0+300 | 40,000 (TCM) |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.14 | 0.05W | -55+155 | 25V | 19.1 (400), 1010M (200) | G:2%, J:5% | 200, 400 | 15,000 (TCM) |
| 1E (1005/0402) | 1.0 x 0.5 x 0.35 | 0.68 | 0.1W | -55+155 | 75V | 110M (200) | G:2%, J:5% | 200 | TPL: 20,000, TP: 10,000 |
| 1J (1608/0603) | 1.6 x 0.8 x 0.45 | 2.14 | 0.1W | -55+155 | - | 1.1k10M (200), 11M22M (400) | G:2%, J:5% | 200, 400 | TP: 10,000 (TD: 4mm pitch) |
| 1J AT (1608/0603) | 1.6 x 0.8 x 0.45 | 2.14 | 0.125W | -55+155 | - | 11k (200) | G:2%, J:5% | 200 | TP: 10,000 (TD: 4mm pitch) |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 4.54 | 0.25W | -55+155 | 150V | 11M (200), 1.1M10M (400) | G:2%, J:5% | 200, 400 | TP: 10,000 (TD: 4mm pitch) |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 9.14 | 0.25W | -55+155 | 200V | 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200, 400 | 5,000 (TD: 4mm pitch) |
| 2E (3225/1210) | 3.2 x 2.5 x 0.6 | 15.5 | 0.5W | -55+155 | - | 105.6M (200), 6.2M10M (400) | G:2%, J:5% | 200, 400 | 5,000 (TD: 4mm pitch) |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 24.3 | 0.75W | -55+155 | - | 105.6M (200), 6.2M22M (400) | G:2%, J:5% | 200, 400 | 4,000 (TD: 4mm pitch) |
| W3A (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 1.0W | -55+155 | 200V | 105.6M (200), 6.2M22M (400) | G:2%, J:5% | 200, 400 | 4,000 (TD: 4mm pitch) |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 2.0W (at 95) | -55+155 | 200V | 105.6M (200), 6.2M22M (400) | G:2%, J:5% | 200, 400 | 4,000 (TD: 4mm pitch) |
Performance Characteristics
| 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, Performance "A"), 0.5 (others) | 0.5 (1F, Performance "A"), 0.3 (others) | 100 cycles (-55/30min, +125/30min) for Performance "A"; 1000 cycles for Standard |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 1000h (402, 90%-95%RH, 1.5h ON/0.5h OFF cycle) |
| Endurance | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 1000h (702 or rated terminal temp.2, 1.5h ON/0.5h OFF cycle) |
| High Temperature Storage | 1 | 0.5 (1F), 0.3 (others) | 1000h (+125 for 1F, +155 for others) |
Derating Curves
Power derating is required at ambient temperatures above 70 or when exceeding rated terminal temperatures. 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 (Room temp: 25, Substrate: FR-4 t=1.6mm, Cu foil: 35m). Actual values may vary based on usage conditions and substrate.
Single Pulse Limiting Power Curve
Curves illustrate 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-RK73B2ATTD105J_C316827.pdf
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