نظرة عامة على المنتج
The PWR12JTFA4R70 from Bourns is a 4.7Ω ±5% wirewound power resistor rated at 12W, designed for high-power dissipation in industrial power supplies, motor drives, and power electronics. The cement-coated wirewound construction provides excellent pulse withstanding and reliable operation in harsh environments.
المواصفات الرئيسية
| Resistance | 4.7Ω |
| Tolerance | ±5% (J) |
| Power Rating | 12W |
| Temperature Coefficient | ±200ppm/°C |
| Mounting | Through-Hole (Axial) |
| Technology | Wirewound (Cement Coated) |
| درجة حرارة التشغيل | -55°C to +250°C (at rated load derating) |
الميزات
- 12W power rating for high-power dissipation applications
- Wirewound construction for excellent pulse withstanding capability
- Cement coating for high-temperature operation and flame retardancy
- 4.7Ω low resistance for current limiting and load bank applications
- Axial through-hole mounting for easy heatsink integration
التطبيقات
- Power supply inrush current limiting
- Motor drive braking resistor
- Capacitor discharge and snubber network
- Load testing and dummy load
- Industrial heater and power resistor bank