THICK FILM CHIP RESISTORS RK73B
The RK73B series are thick film chip resistors designed for a wide range of applications. They feature a robust construction with a protective film of metal glaze thick film, providing excellent heat and weather resistance. These resistors are compatible with reflow and wave soldering processes and are RoHS compliant. They are suitable for various demanding applications including automotive, medical, and aerospace equipment, where reliability and safety are paramount.
Product Attributes
- Brand: KOA
- Product Type: Rectangular Chip Resistor
- Material: Metal glaze thick film
- Color: Black
- Certifications: AEC-Q200 (excluding 1F)
- Compliance: EU RoHS (lead-free terminals)
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x d x t | Weight (g/1000pcs) | Rated Power | Operating Temp. Range | Resistance Range () | Tolerance | Max. Operating Voltage | Max. Overload Voltage | Packaging (pcs/reel) |
| 1F (0402/01005) | 0.40.02 x 0.20.02 x 0.110.03 x 0.130.02 | 0.04 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k10M (200) | 2%, 5%, 250ppm/ | 20V | 30V | 40,000 (TCM) / 20,000 (TBL) |
| 1H (0603/0201) | 0.60.03 x 0.30.03 x 0.150.05 x 0.230.03 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | 2%, 5%, 400ppm/ | 25V | 50V | 15,000 (TCM) |
| 1E (1005/0402) | 1.0+0.1-0.05 x 0.50.05 x 0.25+0.05-0.1 x 0.350.05 | 0.68 | 0.1W | -55+155 | 110M (200) | 2%, 5%, 200ppm/ | 75V | 100V | TPL: 20,000 / TP: 10,000 |
| 1J (1608/0603) | 1.60.2 x 0.80.1 x 0.30.1 x 0.450.1 | 2.14 | 0.1W / 0.125W | -55+155 | 11k (0.125W, 200), 1.1k22M (0.1W, 200/400) | 2%, 5%, 200ppm/, 400ppm/ | N/A | N/A | TP: 10,000 (TD: 5,000) |
| 2A (2012/0805) | 2.00.2 x 1.250.1 x 0.3+0.2-0.1 x 0.50.1 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 2%, 5%, 200ppm/, 400ppm/ | 150V | 200V | TP: 10,000 (TD: 5,000) |
| 2B (3216/1206) | 3.20.2 x 1.60.2 x 0.4+0.2-0.1 x 0.60.1 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | 2%, 5%, 200ppm/, 400ppm/ | 200V | 400V | TD: 5,000 |
| 2E (3225/1210) | 3.20.2 x 2.60.2 x 0.4+0.2-0.1 x 0.60.1 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | 2%, 5%, 200ppm/, 400ppm/ | N/A | N/A | TD: 5,000 |
| W2H (5025/2010) | 5.00.2 x 2.50.2 x 0.650.15 x N/A | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | 2%, 5%, 200ppm/, 400ppm/ | N/A | N/A | TD: 4,000 |
| W3A (6432/2512) | 6.30.2 x 3.10.2 x N/A x N/A | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 2%, 5%, 200ppm/, 400ppm/ | 200V | 400V | TD: 4,000 |
| W3A2 (6432/2512) | 6.30.2 x 3.10.2 x 0.4+0.2-0.1 x N/A | N/A | 2.0W | -55+95 | 15.6M (200), 6.2M22M (400) | 2%, 5%, 200ppm/, 400ppm/ | 200V | 400V | TD: 4,000 |
Performance Specifications
| Test Item | Test Method | Guaranteed Value | Representative Value |
| Resistance | Within specified tolerance | R(%) + 0.1 | 25 |
| Temperature Coefficient of Resistance | Within specified value | - | +25/-55, +25/+125 |
| Overload (Short time) | Apply 2.5 times rated voltage for 5 sec. (2 times for 1E, 2B, W3A2) | 1: 1F 0.5: others | - |
| Resistance to Soldering Heat | 2605, 10s1s | 0.5: 1FW3A2 (10R1M) 1: 1FW3A2 (R10, R1M) | - |
| Temperature Cycling | -55 (30min.)/+125 (30min.) 100 cycles | 1: 1F, Performance "A" (Heat Shock) 0.5: others | 0.5: 1F, Performance "A" (Heat Shock) 0.3: others |
| Damp Heat Load | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1: others (1.5: 1F) |
| Durability | 702 or Rated Terminal Temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1: others |
| High Temperature Storage | +125, 1000h: 1F +155, 1000h: 1H, 1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2 | 1 0.5: 1F 0.3: others | - |
2403141437_KOA-RK73B2ATTD823J_C316803.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