EWWR Axial Lead Wirewound Resistors
The EWWR series is an economical axial lead wirewound resistor designed for flexible circuit design with its small size. It offers a range of power options from 2W to 21W, resistance values from 1.2 to 9.3K, and a tightest tolerance of 5%. With a high stability, non-flammable paint encapsulation, and excellent heat resistance, the EWWR series can operate stably at relatively high temperatures (up to 260) without damage, making it ideal for high-temperature environments or applications requiring long-term loads. It is suitable for precision instrumentation, semiconductor testing equipment, medical equipment, and capacitor charging & discharging applications.
Product Attributes
- Brand: C&B Electronics Shenzhen CO., LTD.
- Origin: Shenzhen, China
- Material: Wirewound (Resistive Wire), Ceramic (Rod), Non-Flammable Paint (Encapsulation)
- Certifications: IEC 60115-1, MIL-STD-313
Technical Specifications
| Series | Resistance Range | Tolerance | TCR | Rated Power | Insulation Voltage | Dimensions (L x l x D) | Termination | MOQ | Packaging |
| EWWR1112 | 1.2R621 | 5% | 160ppm/ | 2W | 1000V | 22.12.1 x 183.1 x 5.61.6 mm | Axial lead | 6000pcs | Bulk |
| EWWR1114 | 1.2R621 | 5% | 160ppm/ | 4W | 1000V | 26.12.1 x 183.1 x 6.61.6 mm | Axial lead | 6000pcs | Bulk |
| EWWR1117 | 1.2R6.7K | 5% | 160ppm/ | 7W | 1000V | 34.62.1 x 183.1 x 9.12.1 mm | Axial lead | 2300pcs | Bulk |
| EWWR1119 | 2R9.3K | 5% | 160ppm/ | 9W | 1000V | 42.62.1 x 183.1 x 8.12.1 mm | Axial lead | 2300pcs | Bulk |
| EWWR1121 | 2R9.3K | 5% | 160ppm/ | 21W | 1000V | 47.62.1 x 183.1 x 8.12.1 mm | Axial lead | 2100pcs | Bulk |
Performance Test Standards
| Test | Test Method | Standards | Test Limits |
| Short Time Overload | 2 times rated power, 5s | IEC 60115-1 4.13 | R(2.1%+1.16) |
| Moisture Resistance | +51C3C, 90%~96%RH, 1.2 times rated voltage, 2112h+59/-1h | IEC 60115-1 4.15 | R(6.1%+1.2) |
| Load Life | 2112h+59/-1h @ room temperature, rated voltage AC, 2.6h on, 1.6h off | IEC 60115-1 4.16.2 | R(6.1%+1.2) |
| Terminal Strength | Tensile: 20N, 40s, Bending: 6N, 3 cycle, Torsion: 6 cycle | IEC 60115-1 4.27 | R(2.1%+1.16) No visible damage |
| Resistance to Solder Heat | +260C5C tin bath for 5s+2s | IEC 60115-1 4.19 | R(2.1%+1.16) No visible damage |
| Thermal Shock | -65C5C, 40min~room temperature, 3~4min~+125C5C, 40min ~room temperature, 3~4min, 6 cycle | IEC 60115-1 4.20 | R(2.1%+1.16) No visible damage |
| Withstand Voltage | Apply a DC voltage of 1000V between the electrode and the substrate for 60s | IEC 60115-1 4.8 | No breakdown or flashover |
| Vibration | 20~200~20Hz/min, Amplitude 1.5mm, 1h in each directions of X Y Z | MIL-STD-313 Method 115 | R(2.1%+1.16) No visible damage |
| Solderability | +256C5C tin bath for 3s+1.6s, immerse 4mm. | IEC 60115-1 4.28 | 90% minimum coverage |
2504101957_RESI-EWWR0006JR100T9_C349007.pdf
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