EWWR Axial Lead Wirewound Resistors
The EWWR series is an economical axial lead wirewound resistor designed for flexibility in circuit design. These resistors offer a small size with high power capabilities, excellent stability, and non-flammable paint encapsulation. They are suitable for operating at high temperatures without damage, ensuring stable performance in demanding environments and applications requiring long-term loads. EWWR resistors are ideal for precision instrumentation, semiconductor testing equipment, medical equipment, and capacitor charging & discharging applications.
Product Attributes
- Brand: Resi (C&B Electronics Shenzhen CO., LTD.)
- Origin: Shenzhen, China
- Termination: Axial lead
Technical Specifications
| Series | Rated Power (W) | Resistance Range | Tolerance | TCR (ppm/) | Insulation Voltage (V) | Dimensions (mm) L | Dimensions (mm) l | Dimensions (mm) D | Dimensions (mm) d | MOQ (pcs) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|
| EWWR1112 | 2W | 1.2R621 | 5% | 160 | 1000V | 26.12.1 | 183.1 | 6.61.6 | 1.860.16 | 6000 | Bulk |
| EWWR1114 | 4W | 1.2R621 | 5% | 160 | 1000V | 34.62.1 | 183.1 | 9.12.1 | 1.860.16 | 2000 | Bulk |
| EWWR1117 | 7W | 1.2R6.7K | 5% | 160 | 1000V | 42.62.1 | 183.1 | 8.12.1 | 1.860.16 | 2000 | Bulk |
| EWWR1119 | 9W | 2R9.3K | 5% | 160 | 1000V | 22.12.1 | 183.1 | 5.61.6 | 1.760.16 | 6000 | Bulk |
| EWWR1121 | 21W | 2R9.3K | 5% | 160 | 1000V | 47.62.1 | 183.1 | 8.12.1 | 1.860.16 | 2000 | Bulk |
Performance Test Standards
| Test | Test Method | Standards | Test Limits |
|---|---|---|---|
| Short Time Overload | 2 times rated power, 6s | IEC 60115-1 4.13 | R(2.1%+1.16) |
| Moisture Resistance | +51C3C, 90%~95%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 20s2s | IEC 60115-1 4.19 | R(2.1%+1.16), No visible damage |
| Thermal Shock | -65C4C, 40min~room temperature, 3~4min~+155C4C, 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, 3h in each directions of X Y Z | MIL-STD-202 Method 213 | R(2.1%+1.16), No visible damage |
| Solderability | +256C+5/-2C tin bath for 3s1.6s, immerse 4mm. | IEC 60115-1 4.28 | 90% minimum coverage |
Part Number Information Example
EWWR1119J2K11T (EWWR 9W 5% 2K 160ppm/ Standard)
| Code | Description |
|---|---|
| EWWR | Series |
| 1112 | Power (1112=2W, 1114=4W, 1117=7W, 1119=9W, 1121=21W) |
| J | Tolerance (J=5%) |
| R211 | Resistance (1.2R621) |
| 2R11 | Resistance (2R9.3K) |
| 2K11 | Resistance (2K) |
| 9K31 | Resistance (9.3K) |
| T | TCR (T=160ppm/) |
| 9 | Code (9=Standard) |
2504101957_RESI-EWWR0006J2R00T9_C348971.pdf
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