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, and have obtained AEC-Q200 data (excluding 1F models). Applications include automotive, medical, and aerospace equipment where safety and reliability are paramount.
Product Attributes
- Brand: KOA
- Product Type: Rectangular Chip Resistors
- Construction: Thick Film
- Appearance Color: Black
- Material: Ceramic substrate, Metal glaze thick film
- Certifications: EU RoHS compliant (excluding lead glass in electrodes, resistive film layer, and glass), AEC-Q200 (excluding 1F)
- Terminal Plating: Sn, Au (for specific models), Sn/Pb (for specific models)
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Weight (g/1000pcs) | Rated Power (at 70C) | Operating Temp. Range | Resistance Range () | Max. Operating Voltage (V) | Max. Overload Voltage (V) | Resistance Tolerance | Temp. Coefficient (10/K) | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 (200) | 20 | 30 | G:2%, J:5% | 200, 250, 0+300 | 40,000 (TCM), 20,000 (TBL) |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | 25 | 50 | 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 | 110M (200) | 75 | 100 | G:2%, J:5% | 200 | 20,000 (TPL), 10,000 (TP) |
| 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 | 10,000 (TP) |
| 1J (0.125W) | 1.6 x 0.8 x 0.45 | 2.14 | 0.125W | -55+155 | 11k (200) | - | - | G:2%, J:5% | 200 | 10,000 (TP) |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 150 | 200 | G:2%, J:5% | 200, 400 | 10,000 (TP), 5,000 (TPL), 4,000 (TD) |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | 200 | 400 | G:2%, J:5% | 200, 400 | 5,000 (TPL), 4,000 (TD) |
| 2E (3225/1210) | 3.2 x 2.5 x 0.6 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | - | - | G:2%, J:5% | 200, 400 | 5,000 (TPL), 4,000 (TD) |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | - | - | G:2%, J:5% | 200, 400 | 4,000 (TD) |
| W3A (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200 | 400 | G:2%, J:5% | 200, 400 | 4,000 (TD) |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 2.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200 | 400 | G:2%, J:5% | 200, 400 | 4,000 (TD) |
Performance
| 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) |
| Resistance to Soldering Heat | 0.5 (10R1M), 1 (R<10, R>1M) | - | 2605, 10s1s |
| Thermal Shock | 1 (1F, Performance "A"), 0.5 (others, standard) | 0.5 (1F, Performance "A"), 0.3 (others, standard) | -55 (30min.)/+125 (30min.), 100 cycles (standard), 1000 cycles (Performance "A") |
| 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
Graphs showing power derating based on terminal temperature and ambient temperature are provided in the original document.
Temperature Rise Data
Graphs showing temperature rise based on power rating for different models are provided in the original document.
Single Pulse Limiting Power Curves
Graphs showing single pulse limiting electric power versus pulse duration for different model groups are provided in the original document.
2403141437_KOA-RK73B2BTTD110J_C719295.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
