THICK FILM CHIP RESISTORS RK73B
The RK73B series are thick film chip resistors designed for high reliability and performance. Featuring a robust construction with a metal glaze thick film protective coating, these resistors offer excellent heat and weather resistance. They are suitable for both reflow and wave soldering processes and are compliant with EU RoHS standards for lead-free terminals. The series boasts a wide product lineup from 0402 to 6432 sizes and is AEC-Q200 qualified (excluding 1F models). These resistors are ideal for various applications including automotive, medical, and aerospace equipment where safety and reliability are paramount.
Product Attributes
- Brand: KOA
- Product Type: Thick Film Chip Resistors
- Series: RK73B
- Construction: Metal glaze thick film
- Appearance Color: Black
- Certifications: AEC-Q200 (excluding 1F)
- Compliance: EU RoHS (lead-free terminals)
- Soldering Compatibility: Reflow, Wave Soldering
Technical Specifications
| Model (Inch Size Code) | Dimensions (mm) L x W x t | Rated Power (W) | Operating Temp. Range (°C) | Resistance Range (Ω) | Resistance Tolerance | Max. Operating Voltage (V) | Max. Overload Voltage (V) | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.4 x 0.2 x 0.13 | 0.03 | -55 to +125 | 1 to 9.1 (E24) | ±2%, ±5% | 20 | 30 | 40,000 (TCM) / 20,000 (TBL) |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.05 | -55 to +155 | 1 to 10M (E24) | ±2%, ±5% | 25 | 50 | 15,000 (TCM) |
| 1E (1005/0402) | 1.0 x 0.5 x 0.35 | 0.1 | -55 to +155 | 1 to 10M (E24) | ±2%, ±5% | 75 | 100 | 10,000 (TP) / 20,000 (TPL) |
| 1J (1608/0603) | 1.6 x 0.8 x 0.45 | 0.1 / 0.125 | -55 to +155 | 1.1k to 22M (E24) | ±2%, ±5% | - | - | 5,000 (TP) / 10,000 (TP) |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 0.25 | -55 to +155 | 1 to 10M (E24) | ±2%, ±5% | 150 | 200 | 4,000 (TD) / 5,000 (TP) / 10,000 (TP) |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 0.25 | -55 to +155 | 1 to 22M (E24) | ±2%, ±5% | 200 | 400 | 4,000 (TD) / 5,000 (TP) |
| 2E (3225/1210) | 3.2 x 2.5 x 0.6 | 0.5 | -55 to +155 | 1 to 10M (E24) | ±2%, ±5% | - | - | 4,000 (TD) / 5,000 (TP) |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 0.75 | -55 to +155 | 1 to 22M (E24) | ±2%, ±5% | - | - | 4,000 (TD) |
| W3A (6432/2512) | 6.3 x 3.1 x 0.7 | 1.0 | -55 to +155 | 1 to 22M (E24) | ±2%, ±5% | 200 | 400 | 4,000 (TD) |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.7 | 2.0 | -55 to +95 | 1 to 22M (E24) | ±2%, ±5% | 200 | 400 | 4,000 (TD) |
Performance Characteristics
| Test Item | Guaranteed Value | Typical Value | Test Method |
|---|---|---|---|
| Resistance Value | Within specified tolerance | - | 25°C |
| Resistance Temperature Coefficient | Within specified value | - | +25°C/-55°C, +25/+125°C |
| Overload (Short Time) | 1 (1F), 0.5 (others) | - | 2.5x Rated Voltage for 5s (2x for 1E, 2B, W3A2) |
| Soldering Heat Resistance | 0.5 (10Ω≤R≤1MΩ), 1 (R<10Ω, R>1MΩ) | - | 260°C±5°C, 10s±1s |
| Temperature Cycling | 0.5 (1F), 0.3 (others) | - | 100 cycles (-55°C (30min.)/+125°C (30min.)) |
| Damp Heat Load | 1.5 (1F), 1 (others) | - | 1000h (40°C±2°C, 90%-95%RH) |
| Durability | 1 (1F), 0.75 (1J, 2A, 2B), 1 (others) | - | 1000h (70°C or Rated Terminal Temp.) |
| High Temperature Exposure | 0.3 (others) | - | 1000h (+125°C for 1F, +155°C for others) |
2403141437_KOA-RK73B1HTTC680J_C306986.pdf
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