抗突波繞線晶圓電阻 4W 4.7ohm 5%
SWM400J4R70TKZBK500
貼片式抗浪湧之大功率電阻
抗突波繞線晶圓電阻 4W 4.7ohm 5%是通過將Nichrome線繞在優質陶瓷棒上製成的，它可以長期在高溫環境中穩定工作。抗突波繞線晶圓電阻用於要求抗浪湧和功耗的電氣設備中。多國專利正在審批中。
| 尺寸 | 額定功率 | 精度(%) | 溫度係數(PPM) | 阻值(Ω) | 包裝方式 |
|---|---|---|---|---|---|
| -- | 4W | 5% | -- | 4.7 | 500/Bulk |
產品特性
- AEC-Q200 Compliant
- SMD enabled structure
- Heat dissipation is much better than chip resistor
- Stronger mechanical structure to endure vibration and thermal shock
- Flameproof multi-layer coating equivalent to UL 94 V-0
- Flameproof feature equivalent to overload test UL 1412
- Enhanced weld spot is reliable against surge
- Products meet RoHS requirements and do not contain substances of very high concern identified by European Chemicals Agency
- SWM series is applied in high surge applications such as high rush current protection for power capacitor, motor start-up protection, car & motorcycle engine ignition, etc. to absorb harmful surge energy, so to prevent hazard of circuit damage caused by surge energy
產品應用
- 防雷保護
- 電表
- 馬達啟動保護
- 工業自動化
- 電容充電(放電)電阻
- 電源
單次浪湧性能
Anti-Surge Wirewound MELF Resistor - SWM series,is showing the surge performance from 10uS to 1S.
浪湧功率降額曲線
• SINGLE SURGE PERFORMANCE graph is good for NON REPETITIVE applications operating in an ambient temperature of 70°C or less.
For temperatures above 70°C, the graph power must be derated further linearly down to zero at 150 °C.
• To determine applicable surge power in continuous surge applications:
1. Identify allowable duration and peak power Psurge of single surge.
2. Determine ratio of surge duration / surge OFF time in application.
3. Calculate Papplicable backwardly according to Y-axis of SURGE POWER DERATING CURVE.
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